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Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

This experiment evaluates whether a person's eye color affects their ability to identify colors in low light.

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

Science fair project that tests whether cats have a preference for organic food.

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

This science fair project idea tests the efficiency of short term memory.

Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.

Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

Science fair project that examines oxidation, reduction and chemical indicators by testing for the presence of the iodide in salt.

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Science fair project idea examines what is remembered from high school education. Formulate and administer high school curriculum tests to adults over 21.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

This science experiment tests if dog saliva can really help heal wounds.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

This experiment tests which gender is better at catching how a magician performs his tricks.