Play with balance and simple engineering as you hurry to create a sturdy rock tower.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

Design and build an invention inspired by Rube Goldberg's designs. Build your invention. Test the machine, write a detailed report.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Science fair project that determines the effect of concentrated mental effort on physical performance levels.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

This science fair project idea studies the differences in gender perception between people.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

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.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This project examines which type of dance burns the most calories.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Science fair project that builds a magnetometer and demonstrate its uses.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

This science fair project idea designs safe bicycle routes using GPS.

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