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This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this activity your child will create their very own marble maze!

This science fair project idea demonstrates that plants give off water.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.