Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

This project compares different liquids and the freezing, melting and boiling points of liquids.

Cookie catastrophe! In this project you will determine if different types of cookie sheets can cause cookies to bake differently.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

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

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Which public places harbor the most bacteria and germs? Test different environments to find out where the most bacteria live in this science project.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

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.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!

Practice conversions within the metric system in this fun math card game for third graders.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

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

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

Whatever is stacked in your cupboard can be used to help your child learn how to compare fractions and decimals. A great hands-on math lesson!