Drawing ray diagrams
Teaching Guidance for 11-14
Some rules for ray diagrams, exemplified by your good practice
When pupils draw ray diagrams in their books you should insist on three things:
- The diagrams are drawn in pencil.
- All rays are drawn with a ruler.
- 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:
- Always use a ruler.
- Always insert direction arrows.
This is definitely a case of the teacher setting the example to be followed!