3rd - 6th Grade Engineering and Science Inquiry Resources : Page 2

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

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

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

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

In this design challenge, students will be tasked with creating a bouncy ball polymer!

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

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.

Take a dive into the candy jar with this yummy science experiment.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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.

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

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.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

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

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

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!

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

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

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

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

This science fair project idea investigates how color affects temperature.

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

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

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

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

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!