Today was focused on practicing calculating probabilities. We finished working on probabilities using addition rules and then proceeded to working on probability problems using multiplication rules. I reviewed ways to represent probabilities (tables and Venn diagrams) and then introduced trees as another way to view probabilities. Students then worked on problems. Overall students struggled more with the idea of multiplying out probabilities. The tendency was for students to add probabilities rather than multiply them for consecutive events. Toward the end of class more students were picking up on the idea. I'll need to spend time next class with some additional practice problems.
View the class summary for a student's perspective of the class.
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