How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

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 science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This project compares the strength of one, two, and three-ply toilet paper.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

Determine whether the relationship between a personâs armspan and height are genetic.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

For this activity your child will use the ready made glycerin base to create elegant rose petal hand soaps.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

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

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Think about the adaptive utility of an important aspect of our physiology.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

This experiment will explore if and where fractals can be found in the natural world.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.