In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

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

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

In this project, a mnemonic is used to test how it increases memory.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea determines what household items are good conductors of electricity.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

This science fair project idea determines what household items are good conductors of electricity.

In this project students experiment with making music using only glasses of water.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Examine the effect of pressure on carbonation in soda.

This science fair project idea explores whether color affects a person's emotional state.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.