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Preschool - 1st Grade Physical Science Activities

What&#39;s a liquid? What&#39;s a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Ice Cream Science

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.

Growing Jack-o'-Lantern

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

Homemade Frozen Yogurt

This classic children&#39;s game demonstrates how sound travels through air vs. through a solid.

How Sound Travels Through Air and Solids

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&#39;t!

Spinning Science: Disappearing Color!

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.

Candle Burning Experiment

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

Oobleck Science: Solid or Liquid? 

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

Make a Parachute Toy

This classic children&#39;s game-connecting two cups with a string-demonstrates sound&#39;s ability to travel through air vs through a solid.

The Speed of Sound on a String

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

Marble Physics

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

What Happens When Oil and Water Get Together?

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

"Oil Painting" for First Grade Scientists

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

Make a Fistful of Slime!

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 Well Does Sound Travel Through a Gas? A Liquid? A Solid?

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Make a Marble Run!

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

Celery and Food Coloring Experiment

What do you get when you combine science and fairies? Fairy scientists who make their own potion, of course! This activity promotes critical thinking skills as your child mixes, experiments, and creates their very own fairy potions.

Make Your Own Fairy Potion

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Turn Salt Water into Drinking Water

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.

Create a Sandwich Bag Explosion!

What happens when light hits a hard surface? Find out by conducting a simple light reflection experiment with your preschooler.

Light Reflection

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.

Find Out What Makes Popcorn Pop

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

Make Window Constellations

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

Gluep: Solid or Liquid?

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

Spooky Science 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.

Weight Wonders: Big and Light...Heavy and Small?

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

Let's Go Ice Fishing!

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Light and Mirrors

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

Learn Shadow Science

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Food Coloring in Water

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

Experiment with Boiled Egg Science

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