- What does it mean to be colour blind?
- What do the rods and cones in our eyes do?
- Which part of the eye doesn't work properly in someone who is colour blind?
- Which colours does David have trouble seeing?
- What proportion of boys are colour blind?
- About how many girls are colour blind?
- Colour blindness is not a genetic condition. True or False?
- How does David's colour blindness impact his life?
- What was surprising about this story?
- Illustrate an aspect of this story.