This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Are you looking for an out-of-this world activity that's both fun and educational? This solar system garland is a great way to introduce your child to astronomy.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Explore the belief in astrology as a predictive system.

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This project examines which style of central-air system filter traps the most particles from the air.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

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

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

Show your child the solar system and let them explore the stars and space by creating a painting. It's a fun and easy way capture your child's imagination.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Learn the anatomical and physiological differences between central and peripheral visual systems.

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Find out whether pacing in long-distance running actually acquires for drastic changes in finishing times versus running super-fast at the start.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

Learn about emulsification and bile's roles in digestion, and investigate how the digestive enzyme lipase breaks down lipids.