This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

This science fair project investigates why the number of visible stars changes from place to place.

This science fair project idea explores substances that cause a bubble to last longer.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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

This project examines what types of objects burn and which burn faster and cleaner.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

The purpose of this science fair project is to build a basic radio.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

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

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea investigates how magnetism can defy the force of gravity.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

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

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

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.