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This science fair project idea determines what household items are good conductors of electricity.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

This science fair project idea investigates if fats add to the flavor of food.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Test whether plants can grow without sunlight and water.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

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

This science fair project idea produces varying pitches of sound.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.