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.
Discussion of elevator experiment.
Objective: To enhance students' ability to describe observations and draw conclusions. To arouse curiosity as to how densities can be determined.
Activity: Discussion of the experience. Groups are now asked to answer the following questions: 1. How many liquids did you need? 2. How did you decide which liquids to use? 3. How could you make your choice of liquids easier to begin with? Is there some knowledge beforehand that would help in making the decision? Answers to questions must be written in the group and turned into the teacher.
