Prior knowledge or skills are often necessary in order to complete tasks. Some of these may have already been learned in previous grades or lessons. Identify the components of a task and ask the following:

1. What will I assume students can already do?

2. What will I not take time to reteach?

3. What wants or needs will exist in relation to an assignment?

It may also be helpful to list the components of a task and number them in the order in which they are to be completed. Some of the components may be those which a teacher assumes students can already do on their own.

A few examples of possible prerequisites are given.

Knowing how to:

1. cut with a particular type of tool.

2. apply an adhesive material.

3. count and share.

4. use a particular type of reference such as a dictionary, encyclopedia, or almanac.

5. read a chart, diagram, or map.

6. identify sequence in a process.

7. use time wisely while waiting for a turn.

8. listen for detail.

9. organize ideas.