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  • Dive into an adventure with this listener-created lesson on pufferfish! Discover this amazing balloon-of-the-sea fish and how it inflates, along with how we can inflate our hearts with God’s love.

    Here’s our trail map:

    Are All Pufferfish Spikey?Why Do Porcupine Fish Have Spikes?How Do Puffers Puff Up?What Do Pufferfish Eat?Are all Pufferfish Poisonous?How Can We Inflate Our Hearts Full of God’s Love?

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Pufferfish Coloring Sheet: https://erynlynum.com/pufferfish-facts-for-kids/

    Plan Your Visit to the Family Adventure Days at the Creation Museum: CreationMuseum.org/family-days

    Join us at the Rocky Mountain Homeschool Conference! SAVE $30 USING CODE nattheo25*! https://rockymountainhomeschoolconference.com/

    Discover God’s wild and wonderful world with the Kids Answers magazine by Answers in Genesis: GetAnswers.org/kids 

    Ask your nature question: https://erynlynum.com/ask

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Resources used for research:

    American Museum of Natural History: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.amnh.org/content/download/109168/1987445/file/stepread-for-grade-4.pdf

    Seattle Aquarium: https://www.seattleaquarium.org/animal/pufferfish-and-porcupinefish/

    Scriptures Referenced in This Episode:

    “When you do things, do not let selfishness or pride be your guide. Instead, be humble and give more honor to others than to yourselves.” Philippians 2:3 (NCV)

    “Christ’s love is greater than anyone can ever know, but I pray that you will be able to know that love. Then you can be filled with the fullness of God.” Ephesians 3:19 (NCV)

    Terms Learned in This Episode:

    Pufferfish: A family of fish called Tetraodontidae known for puffing up. Some have short, prickly bumps that appear when they puff up.

    Porcupinefish: A family of fish called Diodontidae. Like pufferfish, they also puff up. They have long spikes that are visible even when they are not puffed up, and that point out when they do puff up. 

    Tetrodotoxin (TTX): A neurotoxin present in some pufferfish,...

  • What are your favorite sounds in nature? And what is the “music of the spheres?” Music Director Sean Bohnet of the Bohnet Music Academy joins us as we discover the incredible musical world around us, and what creation’s music teaches us about God.

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Begin or continue your musical journey with Bohnet Music’s in-person or online classes: https://www.bohnetma.com/

    Plan Your Visit to the Family Adventure Days at the Creation Museum: CreationMuseum.org/family-days

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    This podcast episode contains paid advertisements. All testimonies are the honest reviews of the host after personally using each product and service.

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  • Do you have a rock collection? Have you ever wondered how rocks are made? Discover the amazing ways God created nature to make rocks, and hear Eryn’s rockhounding adventure stories.

    Here’s our trail map:

    How Is a Rock Made?What Are Igneous, Sedimentary, and Metamorphic Rocks?What Is Rockhounding and How Can You Become a Rockhounder?What Does the Bible Say About Rocks?

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Rock Coloring Sheet: https://erynlynum.com/fun-facts-about-rocks-for-kids/

    Plan Your Visit to the Family Adventure Days at the Creation Museum: CreationMuseum.org/family-days

    Discover God’s wild and wonderful world with the Kids Answers magazine by Answers in Genesis: GetAnswers.org/kids 

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “There is no one holy like the LORD. There is no God but you; there is no Rock like our God.” 1 Samuel 2:2 (NCV)

    “The LORD is my rock, my protection, my Savior. My God is my rock. I can run to him for safety. He is my shield and my saving strength, my defender.” Psalm 18:2 (NCV)

    “We will use these stones to build a memorial. In the future your children will ask you, ‘What do these stones mean?’ Then you can tell them, ‘They remind us that the Jordan River stopped flowing when the Ark of the LORD’s Covenant went across.’ These stones will stand as a memorial among the people of Israel forever.” Joshua 4:6-7 (NLT)

    “In the future your children will ask you, ‘What do these rocks mean?’ Tell them, ‘Israel crossed the Jordan River on dry land. The Lord your God caused the water to stop flowing until you finished crossing it, just as the Lord did to the Red Sea. He stopped the water until we crossed it. The Lord did this so all people would know he has great power and so you would always respect the Lord your God.’” Joshua 4:21-24 (NLT)

    Terms Learned in This Episode:

    Rock: A solid object made from nature. Many are made from minerals.

    Mineral: A natural substance made from nature, such as from the earth’s crust, but not made from living things. A mineral’s atoms (tiny building blocks) are arranged in...

  • Have you ever seen an insect scurry across the top of water? How does a water strider, fishing spider, basilisk lizard, and grebe move across water without sinking beneath it? And how did Jesus walk on water in Matthew 14?

    Here’s our trail map:

    What Is A Water Strider?What Is Water Surface Tension?How Do Water Striders Walk On Water?Do Other Creatures Walk On Water?How Did Jesus Walk On Water?

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Water Strider Coloring Sheet: https://erynlynum.com/how-do-water-striders-walk-on-water/

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    A great article on water striders: 

    https://www.nps.gov/articles/pecies-spotlight-water-strider.htm#:~:text=Also%20known%20as%20pond%20skaters,more%20hydrophobic%20than%20duck%20feathers.

    A great article on basilisk lizards and Jesus walking on water: https://thewell.intervarsity.org/reflections/jesus-and-basilisk-lizard

    Scriptures Referenced in This Episode:

    “Meanwhile, the disciples were in trouble far away from land, for a strong wind had risen, and they were fighting heavy waves. About three o’clock in the morning Jesus came toward them, walking on the water. When the disciples saw him walking on the water, they were terrified. In their fear, they cried out, ‘It’s a ghost!’

    But Jesus spoke to them at once. ‘Don’t be afraid,’ he said. ‘Take courage. I am here!’” Matthew 14:24-27 (NLT)

    “Peter said, ‘Lord, if it is really you, then command me to come to you on the water.’

    Jesus said, ‘Come.’

    And Peter left the boat and walked on the water to Jesus. But when Peter saw the wind and the waves, he became afraid and began to sink. He shouted, ‘Lord, save me!’

    Immediately Jesus reached out his hand and caught Peter. Jesus said, ‘Your faith is small. Why did you doubt?’”  Matthew 14:28-31 (NLT)

    Terms Learned in This Episode:

    Hydrogen Bonding: Water’s ability to stick to itself. Water molecules are made from two hydrogen atoms with a slightly positive charge and one oxygen atom with a slightly negative charge. These positive and negative charges make a water molecule act like a magnet, sticking to other...

  • How do a fish’s gills work? Can frogs breathe under water? And does a spider breathe using lungs like we do? Discover why breathing is important and the unique ways God engineered creatures to get the oxygen they need.

    Here’s our trail map:

    Why Is Breathing Important?How Do Fish Breathe Underwater?How Do Frogs Breathe Through Their Skin?How Do Spiders Breathe Using Book Lungs?What Is the Breath of Life?

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Fish Coloring Sheet: https://erynlynum.com/how-do-fish-breathe-underwater/

    Join the Apologia Homeschool Science Fair: https://www.apologia.com/sciencefair

    Explore Apologia’s award-winning science courses: https://www.apologia.com/homeschool-science-curriculum/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “Then the Lord God took dust from the ground and formed a man from it. He breathed the breath of life into the man’s nose, and the man became a living person.” Genesis 2:7 (NCV)

    “The Spirit of God created me, and the breath of the Almighty gave me life.” Job 33:4 (NCV)

    “Let everything that breathes praise the Lord...” Psalm 150:6 (NCV)

    Terms Learned in This Episode:

    Oxygen: A chemical element. It is very simple and cannot be broken down into more basic pieces. It is essential for life and gives us the energy we need to do everything we do.

    Dissolved Oxygen: Oxygen that comes from the air and mixes into the water. This can happen at the water’s surface, where air mixes with water, and through plants in the water absorbing oxygen. This is the oxygen available to underwater creatures.

    Gills: An organ in fish used to soak up oxygen from the water. Gills are full of blood vessels. When a fish scoops in water through its mouth, the water runs over the gills, and the blood vessels in the gills soak up oxygen from the water and carry it to the rest of the fish’s body.

    Countercurrent Exchange System: A system God engineered into fish by which the blood in a fish’s gills flows in the opposite direction from the water flowing over the gills, allowing the fish’s blood to take in enough oxygen from the water.

    Cutaneous Respiration: “Skin...

  • What is a Tasmanian tiger, and does it still exist? What did a herd of elephants do when their human friend passed away? Dr. Gordon Wilson invites us into the stories of those who protect God’s creation and helps us understand how we can do likewise.

    Here’s our trail map for today:

    How Did One Man Help Save Elephants in Africa?What Does the Bible Say About Taking Care of Creation?What Does Psalm 104 Say About God’s Wild and Domestic Creatures?What Is the Tasmanian Tiger And Is It Extinct?How Can We Help Take Care Of God’s Creation?

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Watch the Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Access more resources in the Nat Theo Club: https://erynlynum.com/club

    Free Creation Care Coloring Sheet: https://erynlynum.com/what-does-the-bible-say-about-taking-care-of-creation/

    Watch the new Riot and the Dance series on Angel Studios: https://www.angel.com/shows/riot-and-the-dance-series

    Watch The Riot and the Dance: Earth: https://www.amazon.com/Riot-Dance-Dr-Gordon-Wilson/dp/B07LCTDW8S https://canonplus.com/tabs/discover/video-series/39009

    Watch The Riot and the Dance: Water: https://canonplus.com/tabs/search/videos/4154

    Books by Dr. Gordon Wilson:

    A Different Shade of Green: A Biblical Approach to Environmentalism and the Dominion Mandate: https://www.amazon.com/Different-Shade-Green-Biblical-Environmentalism/dp/1947644572

    Darwin's Sandcastle: Evolution's Failure in the Light of Scripture and the Scientific Evidence: https://www.amazon.com/Darwins-Sandcastle-Evolutions-Scripture-Scientific/dp/B0CJKV4V17

    The Riot and the Dance: Foundational Biology: https://www.amazon.com/Riot-Dance-Foundational-Biology/dp/1591281237

    Read Dr. Gordon’s articles on Answers in Genesis: https://answersingenesis.org/bios/gordon-wilson/articles/?gcbc_start=0&gcbc_count=72&sitehist=1738603541941

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “The earth is the Lord’s, and everything in it, the world, and all who live in it.” Psalm 24:1 (NIV)

    “God saw all that he had made, and it was very good…” Genesis 1:31 (NIV)

    “God blessed them and said to them, ‘Be fruitful and increase in number; fill the earth and subdue it. Rule over the fish in the sea and the birds in the sky and over every living...

  • What would you do if you were charged by a rhino? What is it like to hold a wombat? Today we hear from biologist and filmmaker Dr. Gordon Wilson of the Riot and the Dance nature films and series. Join us for an adventure!

    Episode Links:

    Order Eryn’s book: The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Watch the new Riot and the Dance series on Angel Studios: https://www.angel.com/shows/riot-and-the-dance-series

    Watch The Riot and the Dance: Earth: https://www.amazon.com/Riot-Dance-Dr-Gordon-Wilson/dp/B07LCTDW8S

    Watch The Riot and the Dance: Water: https://canonplus.com/tabs/search/videos/4154

    Books by Dr. Gordon Wilson:

    A Different Shade of Green: A Biblical Approach to Environmentalism and the Dominion Mandate: https://www.amazon.com/Different-Shade-Green-Biblical-Environmentalism/dp/1947644572

    Darwin's Sandcastle: Evolution's Failure in the Light of Scripture and the Scientific Evidence: https://www.amazon.com/Darwins-Sandcastle-Evolutions-Scripture-Scientific/dp/B0CJKV4V17

    The Riot and the Dance: Foundational Biology: https://www.amazon.com/Riot-Dance-Foundational-Biology/dp/1591281237

    Read Dr. Gordon’s articles on Answers in Genesis: https://answersingenesis.org/bios/gordon-wilson/articles/?gcbc_start=0&gcbc_count=72&sitehist=1738603541941

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Mentioned in this episode:

    Order Eryn's New Book, The Nature of Rest

    The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

  • The smallest seed is the size of a speck of dust, but what plant does it come from? Discover the unique ways orchids grow from a microscopic seed to a beautiful flowering plant…with a bit of help from another species.

    Here’s our trail map:

    What Is the Smallest Seed?What Is an Orchid?How Does an Orchid Grow Up?Does an Orchid Have Leaves?How Can We Grow Up Into Christ?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Orchid Coloring Sheet: https://erynlynum.com/how-do-orchids-grow/

    Eryn’s wild orchid video on Instagram: https://www.instagram.com/erynlynumauthor/reel/CupX1cop-eS/

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “Then Jesus told another story: ‘The kingdom of heaven is like a mustard seed that a man planted in his field. That seed is the smallest of all seeds, but when it grows, it is one of the largest garden plants. It becomes big enough for the wild birds to come and build nests in its branches.’” Matthew 13:31-32 (NCV)

    “...I tell you the truth, if your faith is as big as a mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move. All things will be possible for you.” Matthew 17:20 (NCV)

    ​​“Through his power all things were made—things in heaven and on earth, things seen and unseen, all powers, authorities, lords, and rulers. All things were made through Christ and for Christ.” Colossians 1:16 (NCV)

    “Grow in the grace and knowledge of our Lord and Savior Jesus Christ…” 2 Peter 3:18 (NCV)

    “Let your roots grow down into him, and let your lives be built on him. Then your faith will grow strong in the truth you were taught, and you will overflow with thankfulness.” Colossians 2:7 (NLT)

    Terms Learned in This Episode:

    Microscopic: Something so small we cannot see it with only our eyes. We need a microscope to magnify it so we can see it.

    Orchid: A flowering plant, or a plant that makes flowers. It comes in 28 to 30,000 different varieties, growing in many, many different places around the world including tropical areas, sem-desert, mountainous regions, ocean shores, and the tundra.

    Mycorrhiza: A group of fungus that grows and works with plant roots.

    Symbiotic Relationship: When two species have a close relationship, often helping each other, or one helping the other. Symbiotic relationships can benefit both species or only one.

    Relational: Relational means there is a relationship, connection, or bond between two people, creatures, or things.

    Photosynthesis: A process controlled

  • There were once around 60 million American bison in North America. How did that number fall to only a few hundred? And who helped save the bison? Discover North America’s largest mammal and its remarkable comeback story.

    Here’s our trail map:

    What is a Bison and Why Do They Have Four Stomachs?What Is the Difference Between a Bison and Buffalo?Why Did Bison Almost Go Extinct?How Did Bison Make a Comeback?Would God Forgive Those Who Hunted Bison?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Bison Coloring Sheet: https://erynlynum.com/the-amazing-comeback-of-the-american-bison/

    Join the Apologia Homeschool Science Fair: https://www.apologia.com/sciencefair

    Explore Apologia’s award-winning science courses: https://www.apologia.com/homeschool-science-curriculum/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “All have sinned and fall short of the glory of God.” Romans 3:23 (NIV)

    “I persecuted the people who followed the Way of Jesus, and some of them were even killed. I arrested men and women and put them in jail.” Acts 22:4 (NCV)

    “The God of our ancestors chose you long ago to know his plan, to see the Righteous One, and to hear words from him. You will be his witness to all people, telling them about what you have seen and heard. Now, why wait any longer? Get up, be baptized, and wash your sins away, trusting in him to save you.” Acts 22:14-16 (NCV)

    “We believe with our hearts, and so we are made right with God. And we declare with our mouths that we believe, and so we are saved. … as the Scripture says, ‘Anyone who calls on the Lord will be saved.’” Romans 10:10,13 (NCV)

    Terms Learned in This Episode:

    Bovidae: Cloven-hoofed (split hoof) ruminating mammals.

    Cloven-hoofed: A divided hoof with two main points that look like toes, divided in the middle.

    Ruminant Animals: Animals with separate compartments in their stomachs and a unique way of digesting food, including chewing their food two times.

    Mammal: A group of animals that have hair or fur, are warm-blooded, have a backbone, (most) have live births, and feed their babies with milk from their bodies.

    Keystone Species: A plant or...

  • Books and movies portray shape shifting characters, but those are fictional. Meet some true shape shifters: the octopuses. Discover how they rapidly change color and form not through fictional magic but by natural, God-engineered designs.

    Here’s our trail map:

    How Do Octopuses Change Colors?How Do Octopuses Change Shapes?What Is a Hairy Octopus?How Can We Be Careful of Mimicry in Life?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Octopus Coloring Sheet: https://erynlynum.com/how-do-octopuses-change-color/

    How to make a homemade photo field notes set: https://www.instagram.com/p/DFYwsb4y_8X/

    Save $10 on an order at Parabo Press: https://www.parabo.press/?coupon=NAT10&utm_source=NatTheoPodcast

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Sources used for research:

    Octopus and Squid: The Soft Intelligence by Jacques-Yves Cousteau and Philippe Diole

    Secrets of the Octopus by Sy Montgomery

    Cephalopod Camouflage: Cells and Organs of the Skin by Ryan Gilmore, B.S., Robyn Crook, PhD, and Jacob L Krans, Phd.

    https://octonation.com/tiny-hairy-octopus/

    Scriptures Referenced in This Episode:

    “Beware of false prophets who come disguised as harmless sheep but are really vicious wolves.” Matthew 7:15 (NLT)

    “But when the Spirit of truth comes, he will lead you into all truth…” John 16:13 (NCV)

    “Imitate God, therefore, in everything you do, because you are his dear children. Live a life filled with love, following the example of Christ.” Ephesians 5:1-2 (NLT)

    Terms Learned in This Episode:

    Skin Cells: Microscopic cells that build up together to create skin tissue.

    Chromatophore: Special skin cells with 18-20 muscles around them that pull and relax to reveal or hide colors inside the cells. The outermost layer of an octopus’s skin is made of chromatophores.

    Iridophore: Special skin cells with crystal-like structures (nanocrystals) that can reflect light and appear shimmering green, blue, pink, silver, or gold. These make the second layer of octopus skin.

    Leucophores: Special skin cells that scatter light and appear white, creating a blank canvas for other colored skin cells to...

  • Why do octopuses shoot ink out? And how many brains do they have? I’ll give you a hint…it’s more than one! These creatures might be called “aliens” by some because of their strange looks and behaviors, but they are not from another world. They are God’s wonderful creations!

    Here’s our trail map:

    What Exactly Is an Octopus?How Is an Octopus Born?How Many Brains Does an Octopus Have?How Does an Octopus Shoot Out Ink?Why Does the Bible Say We Are Like Aliens?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Octopus Coloring Sheet: https://erynlynum.com/how-many-brains-does-an-octopus-have/

    How to make a homemade photo field notes set: https://www.instagram.com/p/DFYwsb4y_8X/

    Save $10 on an order at Parabo Press: https://www.parabo.press/?coupon=NAT10&utm_source=NatTheoPodcast

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Sources used for research:

    Octopus and Squid: The Soft Intelligence by Jacques-Yves Cousteau and Philippe Diole

    Secrets of the Octopus by Sy Montgomery

    Cephalopod Camouflage: Cells and Organs of the Skin by Ryan Gilmore, B.S., Robyn Crook, PhD, and Jacob L Krans, Phd.

    Scriptures Referenced in This Episode:

    “So God created the large sea animals and every living thing that moves in the sea. The sea is filled with these living things, with each one producing more of its own kind.” Genesis 1:21 (NCV)

    “O Lord, what a variety of things you have made!

        In wisdom you have made them all.

        The earth is full of your creatures.

    Here is the ocean, vast and wide,

        teeming with life of every kind,

        both large and small.” Psalm 104:24-25 (NLT)

    “Dear friends, you are like foreigners and strangers in this world. I beg you to avoid the evil things your bodies want to do that fight against your soul.” 1 Peter 2:11 (NCV)

    “People who do not believe are living all around you and might say that you are doing wrong. Live such good lives that they will see the good things you do and will give glory to God on the day when Christ comes again.” 1 Peter 2:12...

  • What might it be like to be a lizard in the temple when Jesus taught? Or a sheep in the pasture when angels appeared to the shepherds to announce Jesus’ birth? Or a squirrel in a tree watching Jesus call Lazarus from the dead? Author and pastor Marty Machowski shares the Bible’s true stories through the creative lens of nature in the Redemption Tales series. Learn about the inspiration for his newest book, The Light and the Life, sharing true stories of Jesus’s life on earth through the creatures that might have been there.

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    The Light and the Life: https://newgrowthpress.com/upcoming-books/the-light-and-the-life

    Other books in the Redemption Tales series: https://newgrowthpress.com/search-results-page?q=redemption%20tales

    Learn more about Marty Machowski: https://martymachowski.com/

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Mentioned in this episode:

    Order Eryn's New Book, The Nature of Rest

    The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

  • Have you ever heard of a bird delivering mail? Learn about the amazing homing pigeons that helped save human lives during wars, and how these pigeons find their way across hundreds of miles.

    Here’s our trail map:

    Why Were Pigeons Used to Deliver Messages?What Is Magnetoreception?How Do Pigeons Find the Right Address?Do Humans Have a Homing Instinct?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    How to make a homemade photo field notes set: https://www.instagram.com/p/DFYwsb4y_8X/

    Save $10 on an order at Parabo Press: https://www.parabo.press/?coupon=NAT10&utm_source=NatTheoPodcast

    Free Pigeon Coloring Sheet: https://erynlynum.com/how-pigeons-navigate

    Ask your nature question: https://erynlynum.com/ask

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “...He has planted eternity in the human heart…” Ecclesiastes 3:11 (NLT)

     “We know that our body—the tent we live in here on earth—will be destroyed. But when that happens, God will have a house for us. It will not be a house made by human hands; instead, it will be a home in heaven that will last forever.” 2 Corinthians 5:1 (NCV)

    “Then I saw a new heaven and a new earth. The first heaven and the first earth had disappeared, and there was no sea anymore… The One who was sitting on the throne said, ‘Look! I am making everything new!’” Revelation 21:1, 5 (NCV)

    “Set your minds on things above, not on earthly things.” Colossians 3:2 (NIV)

    Terms Learned in This Episode:

    Columbidae: The family of birds consisting of pigeons and doves.

    Domesticated: An animal that is trained and kept for human use.

    Magnetoreception: The ability of some creatures to use Earth’s invisible magnetic field to navigate.

    Magnetic Field: An invisible force around the earth created by the magnetic pull inside Earth’s outer core.

    Theory: An explanation for why things might happen or act a certain way. A theory is much more than a guess. It is based on observation, or what we see, and experimentation.

    Magnetite: One of the most magnetic naturally occurring minerals on earth.

    CRY4: A protein found in the eyes of some creatures that might allow them to sense or even see Earth’s magnetic...

  • Have you ever touched a slug? Maybe it left its sticky slime on your finger. Why exactly are slugs slimy, and how does their slime help them survive? Meet one of the world’s slowest creatures, the Banana slug, on today’s episode.

    Here’s our trail map:

    Where Did the Banana Slug Get Its Name?Are Slugs Bugs?Why Are Slugs Slimy?How Does God Turn Our Disadvantages Into Advantages?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Nat Theo Club Bonus Video: https://erynlynum.com/club-videos

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    How to make a homemade photo field notes set: https://www.instagram.com/p/DFYwsb4y_8X/

    Save $10 on an order at Parabo Press: https://www.parabo.press/?coupon=NAT10&utm_source=NatTheoPodcast

    Free Slug Coloring Sheet: https://erynlynum.com/banana-slug-facts

    See a banana slug Eryn found in Washington: https://www.instagram.com/p/DA08SSDvPmm/

    Ask your nature question: https://erynlynum.com/ask

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “But he (God) said to me, ‘My grace is enough for you. When you are weak, my power is made perfect in you.’ So I am very happy to brag about my weaknesses. Then Christ’s power can live in me.” 2 Corinthians 12:9 (NCV)

    “We also have joy with our troubles, because we know that these troubles produce patience. And patience produces character, and character produces hope. And this hope will never disappoint us, because God has poured out his love to fill our hearts. He gave us his love through the Holy Spirit, whom God has given to us.” Romans 5:3-5 (NCV)

    Terms Learned in This Episode:

    Scientific Name: A name used around the world to help people know what a creature is. They are written in the Latin language and help scientists around the world know when they are talking about or writing about the same species of creature.

    Common Name: Like a nickname, and sometimes based on what the creature looks like. Common names are often easier to remember than scientific names, but they can be different from country to country.

    Mollusk: Soft-bodied animals that have an important organ called a mantle and a special foot used to get around, grasp things, or dig. Most but not all mollusks have shells.

    Gastropod: A category of mollusks including snails and slugs. Gastropod = “stomach foot.”

    Terrestrial Mollusk: Terrestrial can refer to...

  • What better way to wrap up our Wonderfully Made series than to hear from our listeners? Tune in for this very special bonus episode and always remember: You are wonderfully made!

    “I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.”

    Mentioned in this episode:

    Order Eryn's New Book, The Nature of Rest

    The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

  • What makes us smart? And how do our brains work? Is it possible for us to change our own brains? Discover all the amazing things happening inside your brain as you listen to this episode!

    Here’s our trail map:

    What Are the Parts of the Brain?How Does Our Brain Control Our Body?What Makes Us Smart?How Can We Use Our Brains How God Wants Us To?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Human Brain Coloring Sheet: https://erynlynum.com/gods-design-of-the-brain-for-kids/

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Explore Apologia’s curriculum and classes: https://www.apologia.com/

    Apologia’s Human Anatomy and Physiology course: https://www.apologia.com/shop/apologia-advantage-set-anatomy-physiology-with-junior-notebooking-journal/

    Save 15% on a Premium Starter Kit from Branch Basics. Ditch toxins and protect your cells with human-safe and animal-safe cleaning products from Branch Basics. Use the code NATURE at www.branchbasics.com/nature 

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “...We take captive every thought to make it obedient to Christ.” 2 Corinthians 10:5 (NIV)

    “Do not be shaped by this world; instead be changed within by a new way of thinking. Then you will be able to decide what God wants for you; you will know what is good and pleasing to him and what is perfect.” Romans 12:2 (NCV)

    “​​Brothers and sisters, think about the things that are good and worthy of praise. Think about the things that are true and honorable and right and pure and beautiful and respected.” Philippians 4:8 (NCV)

    Terms Learned in This Episode:

    Organ: A special part inside a body with an important job to do. 

    Cerebrum: The biggest part of the brain, made of four lobes, where we do most of our thinking.

    Cerebellum: “Little Cerebrum.” Controls muscle movement.

    Brainstem: Connects our brain to the rest of our body, through the spinal cord, so our brain can send and receive messages to work with our body.

    Nervous System: A system in our bodies made of our brain, nerves, and spinal cord that sends and receives messages throughout the body so we can do everything we do.

    Neurons: Special cells in or used by the brain to help send and receive messages.

    Synapses: Tiny spaces between neuron cells where the cells communicate with each other and pass along...

  • Have you ever listened to or felt your heart beat? It’s an amazing sound, but what exactly is happening as our hearts beat all day, every day? Dr. Matthew Sleeth joins us to share about God’s amazing designs in the human heart.

    Here’s our trail map:

    What Is the Cardiovascular System?What Is the Heart Made Of?What Important Job Does the Heart Do? How Does Blood From Our Hearts Help Our Cells?How Can We Love God With All of Our Heart?

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Blessed Earth - Biblically-based stewardship of creation: https://blessedearth.org/

    Reforesting Faith: What Trees Teach Us About the Nature of God and His Love for Us: https://www.amazon.com/Reforesting-Faith-Trees-Teach-Nature/dp/0735291772

    24/6: A Prescription for a Healthier, Happier Life: https://www.amazon.com/24-Prescription-Healthier-Happier-Life/dp/1414372280

    Almost Amish: One Woman's Quest for a Slower, Simpler, More Sustainable Life: https://www.amazon.com/Almost-Amish-Womans-Simpler-Sustainable/dp/1414326998/

    Explore Apologia’s curriculum and classes: https://www.apologia.com/

    Apologia’s Human Anatomy and Physiology course: https://www.apologia.com/shop/apologia-advantage-set-anatomy-physiology-with-junior-notebooking-journal/

    Save 15% on a Premium Starter Kit from Branch Basics. Ditch toxins and protect your cells with human-safe and animal-safe cleaning products from Branch Basics. Use the code NATURE at www.branchbasics.com/nature 

    The Ology: Ancient Truths, Ever New: https://www.amazon.com/Ology-Ancient-Truths-Ever-New/dp/194257228X

    Human heart coloring page: https://erynlynum.com/human-heart-facts-for-kids/

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.” Psalm 139:14 (NIV)

    “Above all else, guard

  • Dr. Matthew Sleeth was a doctor who believed only in science… until science failed him. When science could no longer answer his deep questions, he went searching for answers elsewhere, and he found them only after stealing a Bible.

    Episode Links:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Blessed Earth - Biblically-based stewardship of creation: https://blessedearth.org/

    Reforesting Faith: What Trees Teach Us About the Nature of God and His Love for Us: https://www.amazon.com/Reforesting-Faith-Trees-Teach-Nature/dp/0735291772

    24/6: A Prescription for a Healthier, Happier Life: https://www.amazon.com/24-Prescription-Healthier-Happier-Life/dp/1414372280

    Dive in deeper with the Nat Theo Club: https://erynlynum.com/club

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Mentioned in this episode:

    Order Eryn's New Book, The Nature of Rest

    The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

  • Have you ever coded anything? Discover the code inside your body that is more detailed than any human-made technology! Learn how this code carefully copies itself to wonderfully build your body by God’s design.

    Here’s our trail map:

    What Is a Nucleus? What Is DNA?How Does DNA Create Our Bodies?What Is Inheritance?

    Resources Mentioned and used for Research:

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Free Human DNA Coloring Sheet: https://erynlynum.com/dna-lesson-for-kids

    Explore Apologia’s curriculum and classes: https://www.apologia.com/

    Apologia’s Human Anatomy and Physiology course: https://www.apologia.com/shop/apologia-advantage-set-anatomy-physiology-with-junior-notebooking-journal/

    Try CTCMath’s simple and effective math lessons: https://ctcmath.com/

    Save 15% on a Premium Starter Kit from Branch Basics. Ditch toxins and protect your cells with human-safe and animal-safe cleaning products from Branch Basics. Use the code NATURE at www.branchbasics.com/nature 

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “For everyone has sinned; we all fall short of God’s glorious standard.” Romans 3:23 (NLT)

    “12 Sin came into the world because of what one man did, and with sin came death. This is why everyone must die—because everyone sinned…

    15 But God’s free gift is not like Adam’s sin. Many people died because of the sin of that one man. But the grace from God was much greater; many people received God’s gift of life by the grace of the one man, Jesus Christ....

    17 One man sinned, and so death ruled all people because of that one man. But now those people who accept God’s full grace and the great gift of being made right with him will surely have true life and rule through the one man, Jesus Christ.” Romans 5:12, 15, 17 (NCV)

    Terms Learned in This Episode:

    Nucleus: The largest and most important organelle in our cells. The nucleus holds a special package called DNA.

    DNA: A biomolecule that holds a code full of information that builds more cells and proteins, which build everything in our bodies.

    Organelle: “Little organ.” Organelles are little things inside our tiny cells that have very important jobs to do. They are like our cells' own organs.

    Molecule: A creation made from very specific tiny pieces called atoms hooked...

  • What exactly are we made of? We might think of our bodies as skin, bones, and blood, but what makes our skin, bones, and blood? Today we are zooming way in and discovering the busy cities inside our tiny cells.

    Here’s our trail map:

    What Is a Cell?What Are the 3 Main Parts of a Cell?How Is a Cell Like a City With Buildings and Workers?How Does Jesus Hold Everything Together?

    Episode Links

    Order Eryn’s new book, The Nature of Rest: What the Bible and Creation Teach Us About Sabbath Living: https://www.amazon.com/Nature-Rest-Creation-Sabbath-Living/dp/0825448891

    Get full lesson guides in  the Nat Theo Club: https://erynlynum.com/club

    Ask your nature questions: https://erynlynum.com/ask

    Free Human Cell Coloring Sheet: https://erynlynum.com/whats-in-a-human-cell

    Save 25% on a Dwell Bible app subscription: dwellbible.com/nattheo

    Explore Apologia’s curriculum and classes: https://www.apologia.com/

    Apologia’s Human Anatomy and Physiology course: https://www.apologia.com/shop/apologia-advantage-set-anatomy-physiology-with-junior-notebooking-journal/

    Save 15% on a Premium Starter Kit from Branch Basics. Ditch toxins and protect your cells with human-safe and animal-safe cleaning products from Branch Basics. Use the code NATURE at www.branchbasics.com/nature 

    Listen to the Schoolhouse Rocked Podcast: https://podcast.schoolhouserocked.com/

    Order Eryn's book, Rooted in Wonder: Nurturing Your Family's Faith Through God's Creation: https://www.amazon.com/Rooted-Wonder-Nurturing-Familys-Creation/dp/0825447615

    Scriptures Referenced in This Episode:

    “I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.” Psalm 139:14 (NIV)

    “Then the Lord God took dust from the ground and formed a man from it. He breathed the breath of life into the man’s nose, and the man became a living person.” Genesis 2:7 (NCV)

    “For in him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things have been created through him and for him. He is before all things, and in him all things hold together.” Colossians 1:16-17 (NIV)

    Terms Learned in This Episode:

    Cell Theory: The discovery made by Theodor Schwann and Mathias Schleiden in 1839 that all living things are made of cells and that cells are the building blocks of life. 

    Cell Membrane: The outer layer of a cell, like a city wall, that keeps things in or out (and allows some things to pass through).

    Cytoplasm: Cyto means cell and plasm refers to liquid. Cytoplasm means cell liquid. Liquid inside a cell.

    Organ: A special part...