Pixels and Additive Color

Using a tiny microscope and a cell phone, students examine the red, green and blue pixels that use additive color to create all the colors you see on your computer screen.

Grade Range: 4-9

Duration: 1/2 Hour


  • Micro-Phone Lens
  • Phone with camera (5+ mega pixels)
  • Computer screen
  • Light Blox

NGSS Connections

PS4.A: Wave Properties

  • Information can be digitized (e.g., a picture stored as the values of an array of pixels); in this form, it can be stored reliably in computer memory and sent over long distances as a series of wave pulses (HS-PS4-2, HS-PS4-5)
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