In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Science fair project that determines whether brain size is correlated with intelligence.

Start your toy engines -- this is going to be a fast and friction-filled race!

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

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

This science fair project idea compares biodiversity between drops of water.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

Is it a square or a circle? See if you can trick your friends with this zany science project!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.