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.

Teacher defines rectangle, rhombus & square & proves the theorems.

Objective: Define rectangles, rhombuses, and squares. Identify necessary conditions for these special quadrilaterals.

Activity: Teacher defines rectangle, rhombus, and square and proves the theorems representing the necessary conditions for each. Teacher works various examples. Students work practice problems.

Assessment: Students' attention and participation during the instruction. Monitor student's ability to work sample problems.