Lesson plan

Determine the independence of events using the probability formula

teaches Common Core State Standards CCSS.Math.Content.HSS-CP.A.2 http://corestandards.org/Math/Content/HSS/CP/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2

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Big Ideas: If the product of the probabilities of two events equals the product of their intersection, the events are independent. In symbols: If P(A)∙P(B) = P(A ∩ B), then A and B are independent. Students were formally introduced to probability in seventh grade with the standard 7.SP-5 & 7.SP-8 This lesson provides an introduction to a formula for determining independence and is based on S-CP.2. The Task Launch involves a situation where the events are obviously independent. The Task itself requires students to organize information in a table or Venn diagram and to use the formula to determine whether the events are independent or not. Special Materials: None