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

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

This science fair project idea investigates if fats add to the flavor of food.

Help your child add some flair to the family garden with pencil pinwheels!

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

This experiment explores how listening in to a one-sided conversation affects concentration.

This project compares the strength of one, two, and three-ply toilet paper.

Your child will decorate a headband with any bugs they can think of, then they'll add antennae so they can pretend to be a bug!

Test out various brands of permanent markers to see which one is least water soluble.

What happens when "coffee-addicts" miss coffee for 1 day? Find out in this science fair project idea!

Science fair project that determines whether moths are attracted to one color of light more than others.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!

In this science fair experiment, kids will use the acid test to discover how to tell one mineral from another.

This project explores how well couples convey complex emotions such as envy and pride to one another solely through the sense of touch.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.