Key Ideas
Level 1

• Plants grew big and made lots of oxygen.
• Plants made homes and food for animals.
• Animals moved onto land to live near the plants.

Level 2

• Carboniferous plants developed roots, leaves, and vascular systems, allowing them to grow tall and change the environment.
• The increase in oxygen and creation of soils made it possible for larger land animals and insects to thrive.
• Animal evolution responded to plant expansion: amphibians adapted to land, and early reptiles evolved to live further from water.

Schedule

Day One	Day Two	Day Three	Day Four
Main Lesson and/or Story	Spine Reading	Literature Extension	Extension Videos or Books
Hands On Activity			Try something for "Other Activities"
Narration Page or Coloring Page	Notetaking Extension:  Read a short paragraph together. Highlight only the most important words (no full sentences). Talk about why those words matter.	ELA: Sentence Expansion	ELA Page: Choose Another One

Hands-On Activity
Play Dough Insects 

Materials

• Play dough, foam dough, or air dry clay
• Leaves (bigger veined one work best)
• Optional: preferred art supplies if they’d prefer to do a drawing instead of a 3D 

Timeline Entries
~359 million years ago – Carboniferous begins
Swampy forests start to appear, filled with primitive ferns, horsetails, and club mosses.

~350 million years ago – First tall trees and forests
Plants develop vascular systems and strong roots, allowing them to grow taller and form the first dense forests.

~345–330 million years ago – Giant insects thrive
Dragonflies with 2-foot wingspans and huge millipedes roam the forests, helped by high oxygen levels.

~330 million years ago – Amphibians move farther onto land
Animals begin leaving water more often, following plants that provide food and shelter.

~320 million years ago – Early reptiles appear
The first reptiles evolve, with eggs that don’t need water, allowing them to live fully on land.

~310–300 million years ago – Carboniferous forests collapse
Massive forests die and are buried, forming the coal deposits we mine today.

~300 million years ago – End of the Carboniferous
Oxygen levels peak, insects reach their largest sizes, and ecosystems begin to shift toward the Permian period.


Discussion Questions
Level 1

1. What kinds of plants grew during the Carboniferous?
   Sample answer: Big ferns, horsetails, and club mosses.
2. How did plants help animals move onto land?
   Sample answer: Plants made food and homes for animals to live on land.
3. Why do you think insects were so big back then?
   Sample answer: There was more oxygen in the air, so insects could grow bigger.
4. What animals first lived on land after plants grew?
   Sample answer: Amphibians and early reptiles.
5. Why do we have coal today?
   Sample answer: Coal comes from the big forests that died and got buried millions of years ago.

Level 2 

1. How did the evolution of roots, leaves, and vascular systems in plants change the Earth’s environment?
   Sample answer: Roots stabilized soil, leaves allowed plants to grow taller and capture sunlight, and vascular systems carried water and nutrients, creating forests that transformed the landscape.
2. Why did higher oxygen levels allow larger animals and insects to exist
   Sample answer: More oxygen made it easier for bodies to get enough air to support bigger muscles and bigger bodies.
3. How did animals adapt to living on land after plants spread?
   Sample answer: Amphibians developed stronger legs and lungs to move on land; reptiles evolved amniotic eggs so they could reproduce away from water.
4. What does the collapse of Carboniferous forests tell us about ecosystems and Earth’s history
   Sample answer: When forests died and formed coal, it shows how plant life can shape the climate, soil, and air, affecting which animals can live there.
5. Can you think of modern examples of plants changing the environment for animals?
   Sample answer: Rainforests create homes and food for many animals; coral algae support reefs and the animals that live there.