This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Discover how and which salt melts ice the quickest.

Science fair project that explores the natural process of limestone formation.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Check out this fun science project to explore the relationship between solubility, drug absorption, and time required for a drug effect to become apparent.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

Should you use âFITâ Fruit and Veggie Wash or plain water to wash your produce? Find out in this science fair project idea.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This experiment explores the trend of reactivity in the alkaline earth metals as you go down the second column of the periodic table of elements.

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

This science research project challenges students to think of more effective lobster farming methods.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.