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Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

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

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.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

This do-it-anywhere guessing game helps reinforce number concepts. And it's a blast to play.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

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

This measurement activity uses feet to compare objects, but not the ones found on rulers and measuring sticks...the feet on your child's own body!

Preschoolers are fascinated by how colors can be mixed to form new ones. This activity combines color mixing with the concept of melting for extra science fun.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Explore the wattage of microwaves in relevance to cooking time.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

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.

Can cells be frozen? This science fair project provides information to answer this question.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

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

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

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

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

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

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

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

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.