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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.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Use a dichotomous key to identify plants or animals.

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

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.

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

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

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

This science fair project idea investigates the difference in reaction times between boys and girls.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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

Is your child a young ornithologist in the making?

Examine the impact of insecticides on plant growth.

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

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

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

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

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

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Make this easy composting dessert and then enjoy the yummy results!

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