20 Questions

summary

binary question-answer game

time

20’

preparation

10’

group size

2-15

material

cards with concepts

How it is done

  • prepare a pile of words related to your lesson

  • mix in a few concepts that are not programming concepts, but have something to do with your lesson

  • one participant draws a card with a concept

  • the others try to guess it by asking yes/no questions

Comments

Once your participants figure out what kind of concepts the game contains, they usually build an efficient question hierarchy very quickly.

This lesson fits well to lessons on: tree data structures, decision trees, DOM objects etc.