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Gizmos

More new planets discovered!

February 23, 2017 // 0 Comments

The discovery of seven Earth-sized exoplanets orbiting a single star was announced on Feb. 22 based on observations from La Silla Observatory in Chile. Many of these newly ...[more]

Gizmo of the Week: Elapsed Time

February 20, 2017 // 0 Comments

It’s 11:37, and you’ve got a meeting at 3:15. Quick, how long do you have to finish your presentation? Mastering the sexagesimal number system that is used for time is ...[more]

Gizmo of the Week: Ray Tracing (Lenses)

February 13, 2017 // 0 Comments

Our eyes change over time. Some students might become nearsighted and need simple convex glasses to correct for myopia. Bifocals, on the other hand, are typically only needed ...[more]

Gizmo of the Week: Chemical Changes

January 30, 2017 // 0 Comments

Chemical changes are all around us. In Chemical Changes—one of our latest Gizmos—students learn how the formation of gases, the production of heat, the emission of light ...[more]
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