These are exemplary tasks in a number of respects. First, they illustrate that good assessment tasks can be interchangeable with good instructional tasks. Second, the sequencing of questions within each part clearly supports development of understanding of an underlying principle. Third, Part2 can be thought of as a near-transfer task that can be used to make sure students can generalize what they learned in Part1. However, they will have to think a little bit about the unique features of the new task. They cannot just apply the rules from Part1 by rote to part2. One reason that experts have better transfer skills than novices is that they are able to recognize the features of problems that are the same and different from problems previously solved. Therefore it is important for students to learn to think specifically about how they can use what they already know. In this sense, strategies involved with teaching for transfer, especially far transfer, also dovetail with strategies used to assess prior knowledge.