The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

Learn the chemistry and physics of the brain, how our nervous system work. Demonstrate that the brain is an electrical and chemical machine.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

Design and build an invention inspired by Rube Goldberg's designs. Build your invention. Test the machine, write a detailed report.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

Science fair project that determines whether mass and weight are the same or different.

In this design challenge, your child will use building bricks to create a funny face. The activity instructions include question prompts thta can help guide your child through the creative process, and promote their problem-solving skills.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

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!

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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!

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

This science fair project idea compares the cuteness reaction between genders.

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.