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.

Define congruent quadrilaterals. Prove they are congruent by ASASA or SASAS.

Objective: Identify congruent quadrilaterals and prove quadrilaterals are congruent.

Activity: Define congruent quadrilaterals. Prove quadrilaterals are congruent by ASASA or SASAS. (Teacher uses overhead for instruction tool.)

Assessment: Student attention and teacher monitoring of the student's ability to work sample problems.