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.

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

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

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Investigate how to keep your fruit fresh for longer. The purpose of this science experiment it to determine which kind of bag best preserves fruit.

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.

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

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Discover which fabrics shrink the most in the wash and why.

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.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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.