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This Calculating Probabilities of Compound Events lesson plan also includes:
- Calculating Probabilities of Compound Events - Teacher Version (.doc)
- Calculating Probabilities of Compound Events - Student Version (.pdf)
- Calculating Probabilities of Compound Events - Student Version (.doc)
- Grade 7 Mathematics Module 5: Full Module Teacher Materials (.pdf)
- Grade 7 Mathematics Module 5: Full Module Student Materials (.pdf)
- Grade 7 Mathematics Module 5: Full Module Copy Ready Materials (.pdf)
- Answer Key
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Use tree diagrams with multiple branches to calculate the probabilities of compound events. Pupils use tree diagrams to find the sample space for probability problems and use them to determine the probability of compound events in the seventh segment in a 25-part series. Classmates work with outcomes that are equally likely and not equally likely.
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Instructional Ideas
- Use the equally likely outcomes examples first and move to the not equally likely
- Lead a discussion on why to multiply the probabilities of the individual events to find the probability of the compound event
Classroom Considerations
- Class needs to know how to calculate probabilities of unlikely events
Pros
- The problem set includes the tree diagrams to keep the focus on the calculating the probabilities
- The handout includes space for individuals to show all their work
Cons
- None