Grade 3 (age 8-9)

Animal & Plant Life

Animals and plants come in many shapes, so we can sort them into groups by their features. Animals are grouped by where they live and how they move: legs on land, fins in water, wings in the sky. Plants are grouped too, like trees with thick, hard stems and grasses with thin, soft ones. Here you can press the land, water, and sky buttons to explore animals by habitat and sort them by feature.

Where do animals live?

🐾 Where Animals Live

①Different animals live in different places

②Land: legs to walk or run (dog, cat, elephant)

③Water: fins to swim (fish, octopus)

④Sky: wings to fly (eagle, butterfly)

Animal Forms & Features

Animal Classification

Animals by Habitat

💡 Why Animals Look Different

①Bodies match their environment

②Fish are streamlined for swimming

③Birds have light bones and wings to fly

④Rabbits have long hind legs to leap fast

Plant Forms & Features

Plant Classification

Plants by Features

Summary

Animal Classification

Habitat(land/water/sky) + Movement(legs/fins/wings)

Body shape matches environment

Plant Classification

Stem(tree/grass) + Reproduction(flower→fruit→seed)

Plants also differ by type

🎯 Key Points

①Animal bodies match where they live

②Fish → fins, birds → wings, dogs → legs

③Plants split into trees (hard stem) and grasses (soft stem)

④Flowering plants reproduce by seeds

⑤All organisms adapt to their environment

Examples and Unit Test

Example 1

A fish swims with fins and lives in water. By where it lives, which group does it belong to?

Animals can be grouped by where they live (land, water, sky) and how they move (legs, fins, wings).

A fish swims with fins and lives in water, so it is grouped as an animal that lives in water.

▸ An animal that lives in water (swims with fins)

Animals are classified by where they live and how they move.

Example 2

How can you tell a pine tree and crabgrass apart by the features of their stems?

A tree has a thick, hard stem and lives for many years.

Grass has a thin, soft stem and usually lives for one year, so a pine is a tree and crabgrass is grass.

▸ Pine = tree (thick, hard stem) / crabgrass = grass (thin, soft stem)

A thick, hard stem means a tree; a thin, soft stem means grass.

Unit-test style

Which statement about classifying animals and plants is correct?

①A fish flies around with wings

②A bird has wings and can fly in the sky

③A tree has a thin, soft stem

④All grasses live for many years

⑤All animals live only on land

▸ ② A bird has wings and can fly in the sky

A bird has wings and moves by flying, so it is grouped as an animal that flies in the sky.

A fish swims with fins (①), a tree has a thick, hard stem (③), grass usually lives one year (④), and animals live in many places: land, water, and sky (⑤).

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Soil Observation

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