This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project idea assesses the effect of music on work performance.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

Check out this cool science fair project idea to explore short and long term memory and whether there is gender differences in memory.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

Kids learn about the color rendering index by finding the best lightning for makeup in this fun and original physics science fair project idea.

Science fair project that compares the properties of different fabrics to determine whether natural or synthetic fabrics are better at wicking away moisture.

Science fair project that determines whether brain size is correlated with intelligence.

This science fair project explores how salt and sugar affect the melting rate of ice in water.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

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

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project determines whether the types of plants growing in a Pacific Northwest rain forest environment are influenced by the soil acidity.

Demonstrate how tracks are formed by pressing your hand into a cornmeal mixture, then reverse the process and make prints of the track.

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.