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Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This project explores whether music affects the growth and health of plants.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Science fair project that creates fog using bottles of hot and cold water.

Sponges are easy to handle and fun to play with, and your child will love putting these simple, three-piece puzzles together.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Science fair project that cultivates slime mold and monitors the stages of its development.

First graders are learning basic addition and subtraction math facts. Practice in the sandbox with this fun outdoor math activity!

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

This project explores what happens to a rubber band when it is heated and cooled.

Work on division with remainders in this fun fourth grade math board game.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Weave a unique ribbon pattern! This fun arts and crafts activity is a great way to make colorful projects and learn basic math and art skills.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.