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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea experiments with spinning color wheels and optical illusions.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

In this science fair project you will make a model of a cell membrane using very simple material.

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

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

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 simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Take a dive into the candy jar with this yummy science experiment.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea examines the reason boats are shaped and engineered.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students create their own miniature salt flats at home.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

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