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

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

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

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

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

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.

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

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.

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

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

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

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

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.

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.

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

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

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.

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.

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

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

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.

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!

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

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

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.

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

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.