In this project children practice the scientific method while playing with puffy paint.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This science fair project idea explores how length affects the weight a bridge can hold.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Help your kindergarten or first grade child use his creativity to make a beautiful magnetic patterned structure while discovering the wonders of magnets.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Learn all about balance and motion as your child designs a corn maze!

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This science fair project idea investigates whether air has mass and weight.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?