What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

Encourage your child to compare and contrast a wide variety of autumn-themed items by weighing various objects and recording their findings.

Whatever is stacked in your cupboard can be used to help your child learn how to compare fractions and decimals. A great hands-on math lesson!

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

This simple experiment serves as an introduction to the greenhouse effect.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This science fair project idea investigates food preference of birds.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

Determine whether the application of Febreeze will lower the bacterial count.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

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