Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

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

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Science fair project that explore how compound motion works by examining how gravity is affected by horizontal force.

Engineers in training can get started with this simple wheel-and-axle construction activity.

This science fair project idea provides evidence that air is everywhere and takes up space.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

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

This science fair project idea investigates the difference in reaction times between boys and girls.

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

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

This science fair project idea produces sounds by creating vibrations using different objects.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This science fair project idea produces varying pitches of sound.

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

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

How much water comes out of snow? Explore this timely question with your kindergarten scientist with this easy winter experiment.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Slip some science into storm watching with a homemade rain gauge!

This experiment will explore the possibility of creating an infinite object by hand.