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

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Learn whether writing things down really makes things easier to remember.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

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

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.