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In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this activity (pages 17-31), learners are introduced to techniques that are used to determine the structures of solid materials.

This paper describes a working-model demonstration of Ernest Rutherford's 1911 experiment about the nature of atoms.