Biology Ladder · Elementary · Grade K–3

Life Science for Young Learners

For ages 5 to 9, read aloud with a grown-up: living and nonliving, what plants and animals need, parts of a plant, seeds, animal groups, habitats, food chains, life cycles, senses, seasons and caring for living things.

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51 topics in 10 units. Leads to Life Science. Not sure this is the right course? Find your rung.

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Unit 1 Living Things

4 topics

What makes something alive, what every living thing needs, and things that were once alive.

  1. Living or Not Living?
  2. What Living Things Need
  3. Once Living: Logs, Leaves and Shells
  4. Living Things Grow and Change

Unit 2 Plants

11 topics

What plants need, the parts of a plant and their jobs, seeds and how they travel and grow, and the plant parts we eat.

  1. What Plants Need
  2. Parts of a Plant
  3. What Roots Do
  4. What Stems and Leaves Do
  5. Flowers, Fruits and Seeds
  6. Bees, Butterflies and Pollen
  7. How Seeds Travel
  8. A Seed Starts to Grow
  9. The Life Cycle of a Plant
  10. Plants Make Their Own Food
  11. Plant Parts We Eat

Unit 3 Animals

6 topics

What animals need and eat, body parts that help them, their coverings, how they move, and how parents care for their young.

  1. What Animals Need
  2. Plant-Eaters, Meat-Eaters and Both
  3. Body Parts That Help
  4. Fur, Feathers, Scales and Skin
  5. How Animals Move
  6. Young Animals and Their Parents

Unit 4 Animal Groups

7 topics

Mammals, birds, fish, reptiles, amphibians and insects: what each group has in common, and how to sort animals into groups.

  1. Mammals
  2. Birds
  3. Fish
  4. Reptiles
  5. Amphibians
  6. Insects
  7. Sorting Animals into Groups

Unit 5 Habitats

6 topics

Where living things live: forests, deserts, oceans, ponds and icy places, animal homes, and how living things change their surroundings.

  1. What Is a Habitat?
  2. Forests, Grasslands, Deserts and Icy Places
  3. Ponds, Rivers and Oceans
  4. Made for Their Home
  5. Animal Homes
  6. Living Things Change Their Surroundings

Unit 6 Food Chains

4 topics

Energy starts with the sun: plants make food, animals eat plants or other animals, and decomposers clean up.

  1. Energy Starts with the Sun
  2. Food Chains
  3. Producers and Consumers
  4. Decomposers

Unit 7 Life Cycles

4 topics

How a plant, a butterfly, a frog and a chicken hatch or sprout and grow, and how life cycles compare.

  1. The Life Cycle of a Butterfly
  2. The Life Cycle of a Frog
  3. The Life Cycle of a Chicken
  4. Comparing Life Cycles

Unit 8 Senses

3 topics

Our five senses, how animals use their senses, and observing like a scientist.

  1. Our Five Senses
  2. How Animals Use Their Senses
  3. Observing Like a Scientist

Unit 9 Seasons and Living Things

3 topics

How trees and animals change with the seasons: leaves, migration, hibernation and getting ready for winter.

  1. Trees Through the Seasons
  2. Animals in Winter
  3. Getting Ready for Winter

Unit 10 Caring for Living Things

3 topics

Taking care of a pet, a plant and the wild places around us.

  1. Caring for a Pet
  2. Caring for a Plant
  3. Caring for Nature
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