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.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Identify vitamin C in fruit juices and to determine which of the following juices contain the most vitamin C

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

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

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

Determine the efficiency of multi-tasking by comparing how long it takes students to complete different tasks. Collate data, complete Summary Chart.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This project concerns activity happening millions of miles away, on the sun.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

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