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Science Classes for Preschoolers

37 free science classes for preschoolers (Ages 3–5) on Wunder — short, fact-checked courses and lessons with narration and a quiz. Filter by age — each link is its own page, not a JavaScript toggle.

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Where Food Comes From

The journey of food from the farm and garden to your plate.

The Four Seasons

Spring, summer, fall and winter — how the year changes.

Bugs in the Garden

Meet the little creatures that live in the garden.

Dive in to meet fish, dolphins, octopuses and more.

Birds that swim but can't fly! Waddle along and meet penguins.

Clouds in the Sky

Look up! What are those fluffy clouds made of? Let's discover!

Plant a seed and watch it grow! Let's start a little garden.

Why do we sleep every night? Let's find out while we rest!

Keep your smile shiny! Learn how to take care of your teeth.

Germs & Washing Hands

Germs are too tiny to see. Learn how soap sends them away!

Vroom, choo-choo, and whoosh! So many fun ways to travel.

Follow the water! Splash along rivers and lakes.

Say hello to the Moon, Earth's big glowing friend in the sky!

Stars in the Sky

Twinkle, twinkle! Discover the shiny stars up in the sky.

A mountain that can puff smoke and pour hot, glowing rock!

Buzz, buzz! See how busy bees make sweet honey.

Frogs & Tadpoles

From a wiggly tadpole to a hoppy frog. Let's grow up together!

Butterfly Life Cycle

Watch a tiny egg turn into a beautiful butterfly!

Meet the cozy animals that live where it is snowy and cold!

Explore the green jungle and meet the animals who live there!

Moo, oink, cluck! Come visit the busy animals on a farm.

Fill your plate with colorful foods that make you strong!

Turn old things into new things and help our planet!

The Five Oceans

Splash! Meet the five giant oceans that cover our Earth.

Mix red, yellow, and blue to make brand-new colors!

The Four Seasons

Spring, summer, fall, and winter: meet the four seasons!

Kinds of Weather

Sunny, rainy, snowy, windy: let's explore the weather!

Dive under the waves to meet the animals of the sea!

Stomp back in time to meet the giant dinosaurs!

Your Amazing Body

Discover the amazing parts of your very own body!

How Plants Grow

Watch a tiny seed turn into a tall, leafy plant!

Amazing Insects

Meet the tiny six-legged bugs that buzz, crawl, and hop!

Blast off to meet the eight planets that circle our Sun!

Doctors & Nurses

Doctors and nurses help us feel better when we are sick!

Meet the brave firefighters who keep our community safe!

The Five Senses

See, hear, smell, taste, and touch - explore your five senses!

Simple bedtime facts to help preschoolers sleep well

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