Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

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

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.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

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.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

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

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.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

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

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!