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

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

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

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

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

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.