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Showing Results for addition practice : Page 7

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Can Hydrogel Crystals be Used as a Sensitive Humidity Indicator?

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Take Science Home with Decomposition

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Explore Christmas Tree Science

An home science experiment for older students that teaches about the science behind heat.

How to Make a Whirligig

This science fair project idea investigates the difference in reaction times between boys and girls.

Reaction Time

Use this lesson to see how animals can have very interesting relationships. Some help each other, some benefit from others, and some hurt others. Young scientists are sure to benefit from this eye-opening lesson.

Animal Symbiosis

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Float My Clay Boat

This science fair project idea explores whether talking to a plant will help it grow.

Talking to Plants

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Growing Bacteria

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Capillary Action Experiment

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Make Your Own Putter

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

How to Make a Water Wheel

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Center of Balance

Come on in, the water’s fun! In this activity, students see the water cycle in action with ordinary objects and learn the water the dinosaurs tasted is still around.

Got Water? How the Water Cycle Works

This year on Mother's Day, try this gift project that brings together an appreciation for gardening with a hands-on lesson in art history.

Watering Can Craft

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Inverse Square Law: How Does Distance Affect the Spreading of Light?

Heads up! Students become cloud experts before making custom clouds, complete with weather predictions!

I Spy Clouds

This lesson engages students in activity to help them understand the phases of the Moon, and why they occur. Students read literature, analyze it, and then apply it to the small group performance of one cycle of the Moon’s phases.

What's Your Phase?

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