Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

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

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.

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 creates fog using bottles of hot and cold water.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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

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

Got a kid who loves fashion? Help her develop her own unique style with this tie-dye project using natural dyes.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

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

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

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

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

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

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

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

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.

Transform your kitchen table into a winter wonderland with a cookie and cocoa party that looks freshly dusted with snow.

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

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

These pretzel reindeer cookies are a great holiday recipe for kids to make. Rudolph and the whole gang agree!

Read on this high school science fair project idea to get basic information on the process of heat transfer and the conditions under which the transfer occurs.

This activity spotlights everyone's favorite reindeer, Rudolph, and preserves your child's handprints in his "antlers".

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

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