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

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

In this activity, your child will be challenged to make a tower using paper cups.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Here's a great early reading and science activity for curious children. Learn how to plant your child's name in seeds for a growing writing activity!

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Using a toy race car kids create a visual model of the Doppler Effect.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

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 investigates which objects float and sink in honey, water, and oil.

Put an oatmeal box, a flashlight, and some construction paper together and you have the makings of an incredibly cool bedroom planetarium!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

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

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

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.