Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

This science fair project idea examines which type of insulation holds in the most heat.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.

Learn about how we localize objects and beings in space through sound and about monaural auditory mechanisms and binaural auditory mechanisms.

Explore the neural and mental mechanisms at play in mental imagery.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This science fair project idea investigates how images are influenced by changes in light.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

Examine the impact of insecticides on plant growth.

This science fair project idea investigates how the shape of an object affects drag.

Which bread molds fastest? Explore the different kinds of breads and how quickly they mold, along with the role of preservatives.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

This project examines whether sugar substitutes are as sweet as real sugar.

Test your friends to find out if you can replicate the placebo effect's incredible results.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

This project compares the national anthems of several different countries to determine if there is a correlation between tempo and a country's latitude.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Science fair project that demonstrates how stalagmites and stalactites are formed.