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.

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.

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.

Practice measurement using centimeters in this fun math race designed for your second grade student!

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.

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

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!

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.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

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.

The Kindergarten Personal Record Book makes measurement fun & active! Kids record their vital statistics from head to toe using unusual tools like paper clips.

Invite your kindergartener to explore the bright new world of measurement by starting out with nonstandard (and tasty!) units, such as gummy bears or worms.

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.

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

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.