Act 1Write down a guess that's too low. Write down a guess that's too high. Write down a guess. 
ProblemSolving Time
With the information from Act 2, find out how many sticky notes will cover the file cabinet.
 Students may work individually for 510 minutes to come up with a plan, test ideas, and problemsolve.
 After individual time, students may work in groups (34 students) to collaborate and solve this task together.
 *Finished early? Challenge students with a Sequel (extension).
Act 3If we weren't exactly right, what could account for the error?

Title: How should we title this lesson so it captures the math we used and where we used it?
Downloads
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Student Handout 
Teacher Notes 
Student Work 