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.

Class discussion about what is a model? Purpose of model? Other examples?

Objective: To have students analyze what a model is, what are some different kinds of models, and why models are useful.

Activity: After the contest, the teacher can lead the class in an analysis of the experience. Some questions which may be discussion starters are included at the end of the cycle. Obviously, they center around the nature of a model, what a model is, and why models are useful. The students can also be encouraged to share other models with which they are familiar.

Assessment: Quality of discussion and students' ability to express the purpose of models.