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Can melted wax turn back into solid wax? Can scrambled eggs turn back into raw eggs? Learn the answers to these questions and more with this second-grade worksheet about reversible and irreversible changes!

Reversible and Irreversible Changes

Walk, sleep, run, eat! We're constantly using energy, whether we're moving or not. In this lesson, students learn how their bodies are constantly converting potential energy into kinetic energy and kinetic energy back to potential energy.

Potential And Kinetic Energy

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

Wheels and Axles

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

Homemade Ice Cream Maker

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Firework Science

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

Physics Magic Trick

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

Dancing Raisins

Help your students' reasoning skills grow with this activity that has them make educated guesses on whether or not an item will be attracted to a magnet.


Magnet Magic

In this lesson, your students will explore the properties of solids and learn to describe them in various ways.


A Solid Investigation

The science of matter becomes as fun as it is educational when George gets in the mix! After watching Curious George work with his 'floppafication' pot, students will learn about matter and force.

Curious Science with Curious George

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

Measuring 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

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

Oobleck Science: Solid or Liquid? 

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Drum Size and Pitch

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.

Yeast Balloon Science!

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

How Sound Travels Through Air and Solids

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

Teach your child how butter is created by shaking up cream the old-fashioned way.

Make Your Own Butter!

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.

Film Canister Rocket

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-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

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

Superhero Lightning Bolt

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

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Where's the Air?

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.

Dried Fruit vs Fresh Fruit

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

Solids, Liquids, Maple Syrup!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Puddle Science: Watch Evaporation in Action

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Build a Balloon-Powered Car

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.

Explore Color Science with Grape Juice

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

Flashlight Science: Transparent or Opaque?

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