Provide "acknowledged body of knowledge" related to the concept. Emphasize the most significant aspects of the concept in an organized, organic manner. Present information sequentially so students see continuity. Draw attention to important, discrete details; don't swamp students with myriad facts.

Teach concept of "matching" sets. Also teach the skill of sets (common character-istics).

Objective: To take part in an imaginative problem solving activity.

Activity: Teacher reads the story Corduroy by Don Freeman. Have students decide how Corduroy could describe his lost button in order to allow help in finding the match.

Assessment: Students' approach to the problem/process.