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Check out this cool science fair project on identifying rocks and minerals for kids.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

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

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Study how liquids separate into layers by creating a liquid gradient, different density liquids separate into layers in a graduated cylinder.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Study science with your first grader in this arts and crafts activity that models the reason why fall leaves change color with some paint and crayons.

This project compares different liquids and the freezing, melting and boiling points of liquids.

Kids are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

Make an edible play dough with your child to help her develop her sensory and motor skills.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

This experiment will explore if a randomly iterated algorithm will result in a pattern.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Help your child make an attractive frozen holiday ornament to hang outside during winter months.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Do you think heat can affect a plant's growth rate?

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.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!