Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

This science fair project idea explores the fastest average speed a human can talk.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project teaches students the differences between fruits and vegetables.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

Research long-term effects and draft a questionnaire about frequency of marijuana use and average annual income. Interpret findings in a detailed report

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

This science fair project idea studies how talking on a cell phone affect driving?

Research information on vitamin content in foods, Examine the effect of vitamins, test organic samples of fruits, meats, grains for vitamin content.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

Science fair project that examines the effects of soap on the surface tension of water. How does soap affect the surface tension of water?

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

Check out this cool science fair project idea to learn why it is important for kids to eat healthy foods like fresh fruits and vegetables.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Detail the chemical properties, nutritional value, medicinal effects of garlic, Write a detailed report, prepare recipes.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

This project examines how temperature affects the volume of gas in balloons.

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

Science fair project that designs a video game that requires players to use relevant skills.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

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

Will people perceive your intelligence differently depending on your hair color? Find out in this science fair project idea!

Fibonacci sequences have been observed throughout nature, like in leaves and flowers. In this project, students find examples of the Fibonacci sequence.