Dr. Judith M. Newman

The problem / statement pattern is most often found in a mathematics or science textbook. The structure is used to outline the details of a problem.

Example:
Progression

Sally is having a party. The first time the doorbell rings, one person enters. If on each successive ring a group enters that has two more persons than the group that entered on the previous ring, how many people enter on the sixth ring? How about the ‘n’th ring?