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

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Think about the adaptive utility of an important aspect of our physiology.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea investigates the hardness property of minerals.

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

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

Science fair project that uses distillation to convert salt water into fresh water.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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

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

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

This science fair project idea will be examining oxidation and acid rain

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

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

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Determine how we can separate the components of a solution

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.

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