Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Learn how to use the Punnett Square to predict the gene combinations of dominant and recessive traits in this fun and easy genetics science project!

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Use a dichotomous key to identify plants or animals.

Is garlic antibacterial? Antimicrobial? Kids find out by using common kitchen equipment and ingredients in this cool and easy microbiology science fair project.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Read on this high school science fair project idea to get basic information on the process of heat transfer and the conditions under which the transfer occurs.

Determine if it is easier to memorize colors, words, words in phrases, pictures or numbers. Determine at when retention rate in each category is the best.

Examine the impact of insecticides on plant growth.

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

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

Determine which video game elevates the heart rate best and burns the most calories.

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

Observe if dissolved aspirin will help plants grow healthier and faster in this science fair project idea.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Discover if soda geysers will erupt when using regular vs. diet cola and which candies will create eruptions.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

The purpose of this science fair project is to learn which substance best preserves apples. Learn about enzyme interactions in fruit and scientific processes.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!