3rd - 8th Grade Science Activities : Page 2

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!

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Make sourdough bread...and learn some colonial history and modern science in the process!

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

This project explores whether there is an effect on people, including heart rate and self-expressed mood, when they are exposed to different types of music.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Science fair project which identifies the most effective insulator that you could use to make a winter coat by comparing how well cloth and cotton trap heat.

Learn all about balance and motion as your child designs a corn maze!

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

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 experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!