Check out this cool science fair project idea on spectrum spinners and investigate how certain color combination can produce other colors.

Study the physical and chemical changes that make hair curl or straighten. Study ingredients, function of chemicals like thioglycolic acid.

Check out this cool science fair project on identifying rocks and minerals for kids.

Research optical illusions and human auras. Understand why the probable cause of perception is mach bands.

This science fair project idea investigates how different disinfectants work in killing germs.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Research camouflage products and techniques, test quality by timing volunteers. Calculate the average length of time to recognize the subject.

This project determines what category of person is most likely to be ticklish.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

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

This project examines the concentration of dissolved oxygen in water, with and without oil.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.