An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

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

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

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.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

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

The goal of this project is to create an exciting topographical map out of dough.