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

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!

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

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

Teach your first grade scientist the difference between liquids and solids using maple syrup.

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

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

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.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

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

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

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.

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.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

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.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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

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

Introduce your child to science with something they see everyday--their shadow!

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

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

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.

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.

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

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.

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.

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