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 interactive lecture and in-class guided practice.

Objective: To introduce and teach related terms.

Activity: Using overhead projector, teacher introduces term "mole" as the SI unit of measuring the quantity of a substance. Lecture on Avogadro's Number and its meaning. Compare and relate the terms molar mass, gram atomic mass, gram formula mass, and gram molecular mass. Draw simple diagrams of atoms, ionic compounds, molecules and moles to relate to the definition of each term. Check for student understanding with a matching exercise on the overhead. Teach mole-mass calculations and provide guided practice for students using sample problems for them to solve in class with their own calculators.

Assessment: Student involvement during lecture and ability of students to solve in-class problems.