Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

Use familiar household items and decorations to turn estimation into a fun game!

Use this great no-bake recipe to save energy and keep cool.

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

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Use an Elihu Thomson apparatus, also known as a ring launcher, to learn about electromagnetism concepts and the properties of various metals.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

This cookie dough handles like molding clay, but also makes delicious cookies. Use this activity to strengthen your child's alphabet skills.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Introduce the idea of measuring weight to your preschooler or kindergartener by making a fun and easy-to-use bungee scale to weigh household objects.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

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

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

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

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

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

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.