An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this science fair project, young children discover what happens when two fluids that have different densities get together.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

How powerful is the reaction between baking soda and vinegar? Find out here!

Teach your child how butter is created by shaking up cream the old-fashioned way.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

In this fun activity, your child will create their very own solar oven to bake s'mores!

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

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

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!