Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

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 science fair project idea investigates the difference in reaction times between boys and girls.

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

This science fair project idea determines which method of hand cleansing is the most effective.

Make a backbone model to explore human anatomy and life science.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea examines the reason boats are shaped and engineered.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

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.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.