Spinning Blackboard

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Create beautiful spirals by drawing a straight line. This sounds crazy, but you can with a turntable (a record player or lazy susan), paper, and pen. Brought to you by the Exploratorium's Science Snacks.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
5 to 10 minutes
Estimated Materials Cost:
1 cent - $1 per student
Age Range:
Ages 4 - 14
Resource Type:
Activity
Language:
English

Materials List (per student)

  • Paper and marking pens or butcher paper and sand
  • An old record-player turntable (hunt for one at flea markets, thrift stores, on eBay—a lazy Susan with a square or circular board placed on it will also work, but it will have to be rotated by hand)
  • Optional: A disk cut out of cardboard

Keywords

Subjects

  • Mathematics
    • Geometry
  • Physical Sciences
    • Motion and Forces
      • Rotation Motion

Informal Categories

  • Arts and Crafts

Other

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Access Rights:

  • Free access

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