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.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

This science fair project idea examines liquids of different densities.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

This science fair project investigates how temperature of a room affects the burn rate of a candle.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Find out whether putting something on top of a plant will inhibit its growth.

In this fun science fair project, draw a 3D picture and compare the holographic effects of red and blue 3D glasses and HD glasses!

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

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

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Discover whether ants are more attracted to natural cane sugar or artificial sweeteners.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this cool science project, model how impact craters form on the surface of the moon.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.