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Developed and distributed prior to the August 21, 2017, total eclipse, this product includes a template and instructions for making a handheld viewing fan. The front and back of the fan contains information on viewing safety and a description of a... (View More)

Audience: Informal education
Materials Cost: Free

This is an activity about measuring angular size and understanding the solar and lunar proportions that result in solar eclipses. Learners will use triangles and proportions to create a shoebox eclipse simulator. They will then apply what they learn... (View More)

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