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First I want to thank Paul for the math review in the beginning. I enjoyed the lesson.  Paul said this lesson was Guided inquiry and I agree with him. As the teacher his role was limited. He gave background material, he posed a question and provided the materials. He then set back and let us explore. As students, my group   came up with the procedure, we collaborated and came to a census of what was happening. We then drew a conclusion based on our observations. We as students were allowed to further explore and come up with a new set of observations.  Paul as teacher was there to answer questions if needed. Even when we came bak as a group, the conversation was student led. I'm always thinking how can I adapt this lesson to a younger level and I'm asking for any insight.