Ray Diagrams
Light, Sound and Waves

Drawing ray diagrams

Teaching Guidance for 11-14 Supporting Physics Teaching

Some rules for ray diagrams, exemplified by your good practice

When pupils draw ray diagrams in their books you should insist on three things:

  1. The diagrams are drawn in pencil.
  2. All rays are drawn with a ruler.
  3. All rays carry an arrow showing the direction of travel of the light.

When you draw ray diagrams on the board or on a transparency:

  1. Always use a ruler.
  2. Always insert direction arrows.

This is definitely a case of the teacher setting the example to be followed!

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