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.

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.

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.

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

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

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

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

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

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

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

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

This homemade parachute toy is incredibly easy to build. Plus, it gives kids an excuse to investigate and experiment...the backbone of kindergarten science.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

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

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

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.

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

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

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.

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.

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

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

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

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

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

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

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

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.