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This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Test whether cutting up meats will make it cook faster than just cooking it whole.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

A fun activity for a hot day, this will give young kids a chance to experiment with beginning science and math â and splash around in the process!

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

Determine which metal has the highest rate of conductivity.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project idea determines which flower lasts the longest.