This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

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

The objective of this science project is to determine the length of time for different seeds to germinate.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Research camouflage products and techniques, test quality by timing volunteers. Calculate the average length of time to recognize the subject.

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.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Introduce your child to science with something they see everyday--their shadow!

High school students learn about resistance, resistivity, and if copper is the best metal conductor in this great physics science fair project idea.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Learn about the factors that influence group conformity.

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This project explores what happens to a rubber band when it is heated and cooled.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

This science fair project idea investigates how color affects temperature.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

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.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

This science fair project explores whether musicians are better than non-musicians at distinguishing and understanding speech in noisy environments

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.