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Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

Fibonacci sequences have been observed throughout nature, like in leaves and flowers. In this project, students find examples of the Fibonacci sequence.

Recognizing number patterns is an important ability on the SAT. Here's a game that teaches your student some of the most common sequences in mathematics.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

This science fair project idea explores whether white light can be separated into different colors.

Discover how and which salt melts ice the quickest.

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.

Make learning how to calculate surface area easy and fun using this simple hands-on approach.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Race to create an equation in this game will help your child and his opponents get creative with addition, subtraction and multiplication.

What's my number? Go ahead and guess! This logic game focuses on number sense that suits all ability levels, as players' questions can be simple or complex.

This fun calculator exercise will take the mystery away from the machine, and familiarize your child with the functions of a calculator.

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.

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

Examine the impact of insecticides on plant growth.

Explore which teeth-whitening products work best - Whitestrips or Whitetrays.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

This experiment examines if space objects become round after reaching a certain mass.

Here is a fun at-home physical activity that encourages movement while also working on literacy or math skills!

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Discover which battery composition (type) lasts the longest.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Most parents probably wouldn't mind subtracting 8-9 years off their age. Here's a fun third grade subtraction activity that may do just that.

Create a fun hands-on game to practice long division, using magnetic numbers on a fridge.

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