In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

This science fair project examines how seeds hitchhike on animals and clothing.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Research history of programming language. Design a new or improved programming language. Create a display that illustrates the features and improvements.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

In this science fair project, students investigate how different colors influence appetite.

Describe the lives of commercially raised chickens. Contact local chicken farmers for information and advice. Write a detailed report about farming techniques.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

Wild-type and GAPDH mutant Caenorhabditis elegans were used as an example of how glucose or sugar affects the lifespan of humans.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

This science fair project idea determines effective strategies to help students stay awake and attentive.

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

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

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

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

This science fair project idea investigates how different disinfectants work in killing germs.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

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