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Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Most kids love to play spy. Here's a way to have fun with mysterious codes while mastering an ordinary, necessary skill: first grade spelling.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.

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

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Guide your middle schooler through making his own papier-maché witch or wizard puppet. Move over Harry Potter!

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

Construct batteries that make electricity from fruits with this fun science fair project.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

Teach your child Morse code, and a little bit of history that she'll pick up in a flash!

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

This project is about after-images and what possibly affects them.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea investigates food preference of birds.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.