Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

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

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Build basic projector out of ordinary materials. Create several color transparency slides, demonstrate your creation.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project idea discovers the mechanism of laminar flow and encourages technological progress based on this concept.

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

This project investigates the affect of storage temperature on microwave popcorn.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

This science fair project idea outlines the principles and techniques behind paper batteries.

This science fair project idea examines various dead zones and investigates the cause and how it can be fixed.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

This science fair project idea looks into the concept of powered parachutes as the future of transportation.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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 idea observes products available in the school cafeteria and waste produced by these products.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.