Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

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.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

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

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

Forget the measuring stick! This fun math activity uses a body part, your child's hand, as a ruler.

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

This do-it-anywhere guessing game helps reinforce number concepts. And it's a blast to play.

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

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

If you're looking for a fun way to have your child gain practice pattern-making while working out fine motor skills, making Washi eggs is the perfect activity.

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

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

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.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

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

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

This little chick is so cute that your child will want to make a whole flock to call her own.

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

Time is an abstract concept that's difficult to grasp. But waiting for the turkey to come out of the oven on Thanksgiving is a concretely yummy experience.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.