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Knows that an object's motion can be described by indicating the change in its position over time.

Spoon Mirror

The main point of this example is about "observing," one of the most valued skills in science. Observation is usually emphasized beginning in the Upper Elementary grades. But it is often easier to observe than to explain. "How curved mirrors actually work" is sometimes covered in High School physics. The principles are also discussed in most encyclopedias, under "Mirrors" or "Optics," and are mentioned with respect to lighthouses, telescopes, and amusement park activities.

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Rotational Motion and Rocket Launches

My friend Kyle works for Boeing on the Sea-Launch project. Sea-Launch is a portable, floating rocket launch pad for putting satellites into space. So, if Korea wants Sea-Launch to put a new digital TV satellite into space, and Sea-Launch can go anywhere in the world with water, where should Kyle take Sea-Launch? (No, it doesn't have a steering wheel. It gets pulled by tugboats.) Well, like any scientist, he scratches his head for a minute, then works it out. Grab a pencil and follow along!

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