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In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This science fair project idea explores the different properties & interactions of sugar molecules.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This science fair project idea investigates whether plants can survive being frozen.

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

This science fair project examines how seeds hitchhike on animals and clothing.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

How powerful is the reaction between baking soda and vinegar? Find out here!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This science fair project idea explores substances that cause a bubble to last longer.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

In this fun activity, your child will create their very own solar oven to bake s'mores!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Making your own glass cleaner is easy, effective and inexpensive!

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!