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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.

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

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

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.

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 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.

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.

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.

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.

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!

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

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.

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

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

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

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

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

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

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.

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

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.

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

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

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

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.

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

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

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

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