Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Making candles from old candles is easy. Recycle old candle stubs to make a "new" candle, and teach your child about recycling at the same time!

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

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

This project examines how temperature affects the volume of gas in balloons.

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.

Making decorative pottery is a great way to experiment with making patterns and texture on a traditionally smooth surface.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

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

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

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

How many steps long is the hallway? Kids put their graph-making skills to work as they make a step map of their own house.

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

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

This science fair project idea determines which flower lasts the longest.

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

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

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

This experiment investigates if stress alters body temperature.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

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

This experiment will explore the best way to create a perfect soft-boiled egg.

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 pumpkin dessert recipe tastes like pie but looks like a no-bake cookie.