The teacher had difficulty identifying who answered first in class quizzes, so the students planned and developed an electronic switch as a solution to the problem. In developing their solution, they planned one step at a time and considered the following variables: conductive and non-conductive categories of materials, their teachers' requirements, and design criteria for the switch.
The following sections detail the work, and indicate what was achieved at each stage.
For classroom background and teaching and learning sequence, see The learning context.
