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

This science fair project idea investigates if fats add to the flavor of food.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

In this science fair project you will make a model of a cell membrane using very simple material.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea investigates how color affects temperature.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This science fair project idea explores the egg's thin membrane.

This project determines what category of person is most likely to be ticklish.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This project investigates the affect of storage temperature on microwave popcorn.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea explores how length affects the weight a bridge can hold.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

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

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.