These alternative options for a preliminary task could be used in a lesson a few days before the main task, or set as homework. The purpose of the preliminary task is to
remind students of certain ideas or skills related to the main task so that they do not become an artificial barrier in the main task, and
help to inform the way you use the main task by assessing students’ familiarity or confidence with these ideas or skills.
These could be used a few days after the main task to provide an opportunity to revisit key ideas from the main task.
We have suggested these preliminary and follow-up tasks as part of a sequence of teaching, but they are intended to be used flexibly. For example, you may prefer to use one of our suggested preliminary tasks as a follow-up task, or vice versa.