Elicit non-trivial dialogue from students. Guide students to reflection and analysis of the experience. Encourage students to share their perceptions and beliefs. Summarize and review similarities and differences.

Teacher leads a discussion about how a matchmaker works.

Objective: To have students analyze the role of a matchmaker, guiding them to the aspects that will be appropriate when discussing enzymes.

Activity: As a whole class, students participate in a brief analysis of how a matchmaker "works." The teacher may supply some leading questions such as: "What is the job of a matchmaker?" "Does there need to be a meeting place?" "Does the matchmaker stay around after the couple are happy together?"

Assessment: Quality of class attention and participation