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This activity introduces learners to the visible portion of electromagnetic spectrum. A visible spectrum is projected in the classroom using a diffraction grating and learners reproduce it using colored pencils. Filters are also used to block portions of the spectrum. This activity is available on the back of the Electromagnetic Spectrum Poster which is a collaborative product of Astrophysics missions and staff comprising the Astrophysics SEPOF. The Astrophysics SEPOF is headquartered at the Space Telescope Science Institute, operated for NASA by the Association of Universities for Research in Astronomy (AURA). Request a paper copy of the poster from SEPOF through the "contact us" page of Amazing Space - be sure to include your mailing address.