Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

People have favorite flavors, but what about ants? Which ant food is the most popular?

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

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

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!

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

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

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

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.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

This science research project challenges students to think of more effective lobster farming methods.

This science project allows students to study the psychology of happiness.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.