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.

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

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

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

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!

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

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

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

Engineers in training can get started with this simple wheel-and-axle construction activity.

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

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

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

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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.

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.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

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

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

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.

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.

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.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!