Use dependency to find a birthday. Learners use an interactive to keep track of excluded potential dates of a birthday using information provided to two people about a third's birthday. Scholars then use the dependency between the dates and months given to find out the birthday.

Concepts

dependent events, outcomes, birthdays

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Additional Tags

math

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Instructional Ideas

• Lead a discussion on how the two use dependent events
• Have the class brainstorm why it is important to know whether events are dependent or not

Classroom Considerations

• Access to the interactive requires signing up for a free account

Pros

• Includes hints for several of the problems
• Reveals the correct answer if needed

Cons

• None

Common Core

HSS-CP.A.3 HSS-CP.A.5 MP2 MP5