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This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

This science fair project idea investigates food preference of birds.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this science fair project, students create their own miniature salt flats at home.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

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!

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.

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 project concerns activity happening millions of miles away, on the sun.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

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.

Start your toy engines -- this is going to be a fast and friction-filled race!

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

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

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.

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

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

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

Examine the impact of insecticides on plant growth.

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