Bubble Wrap
by Dan Meyer
skips
questions
Act One
 1.
What's an answer you know is too high?
 2.
What's an answer you know is too low?
 Teacher noteAsk students to write down their answers on paper first, then share them with their friends, then share them out to the group. This will, ideally, keep everyone accountable for her own guess.
 3.
What are a few reasons for your guess?
Act Two
 4.
What information would be useful here?
 5.
What information doesn't matter?
 6.
If you had all the information you wanted, what would you do with it?
 ImageThe measurements of the other two squares
Act Three
 VideoMedium square answer: 22m30s
 VideoLarge square answer: 40m00s
 Teacher noteThe crucial thing here is to draw out students who think that doubling the side of the square means doubling the time it takes to pop the area. Just because one thing doubles doesn't mean everything doubles.
Sequel
 7.
If a piece took an hour to pop, how large would you expect it to be?
show 55 more questions

How long of a break would you want to take to use the other bubble squares?

How long with the break time be to pop all the bubbles in the medium sized sheet? How about the Large?



How does the rotational momentum of the middle of the cover compare with the outer edge?



How long of a break would Dan get for each of the other bubble sheets?

If you can pop x^2 bubbles in 10 minutes, how long will it take to pop (x+y)^2 bubbles and (x+y+x)^2 bubbles?

How long will it take to pop the large one, assuming we keep the same rate?























How did someone know that amount of bubble wrap would require 10 minutes to pop all the bubbles?











How many minutes long will the breaks be for the medium and large sizes sheets of bubble wrap?











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