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

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

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.

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.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

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!

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

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

Teach children how to upcycle dried-out markers with this homemade paint-making activity!

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

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

This goofy scramble book activity will bring laughs...but also some good, solid comprehension skills too!

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Make a Santa-shaped "wish card" holder for your child...and sneak in some solid practice in reading and writing, too!

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!

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.

Using water, corn syrup, and sequins, your child can create a unique art project while exploring what happens when different liquids are mixed together!

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Try this kooky, spooky arts and crafts activity with your preschooler: make gummy worm ice cubes!

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

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

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Help your first grader get started making this watering can that's filled with homemade flowers. It will brighten up any window sill ... and it's eco-friendly!

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.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

This science fair project idea determines which method of hand cleansing is the most effective.

Egg cartons are known to have abundant uses. As you get into the cold winter months, discuss penguins with your child by creating these adorable egg carton penguins!