Pyramid of Pennies
by Dan Meyer
skips
questions
Act One
- 1.
What's a guess you know is too high?
- 2.
What's a guess you know is too low?
Act Two
- 3.
What information will you need to know to solve the problem?
- ImageThe dimensions of the base layer
- ImageThe pennies per stack
- ImageThe dimensions of a penny
- FileInformation on square pyramidal numbers
Act Three
- ImageAnswer
- FileNewspaper clipping
Sequel
- 4.
Marcelos Bezos is now trying to make a pyramid out of 1 billion pennies. How big would that be? Where should be build it?
- 5.
Each stack has 13 pennies which is a strange number to choose. Why do you think Marcelo Bezos chose it? (Hint: Not out of superstition.)
- Teacher noteGive groups of students a dollar in pennies. See how fast they can assemble seven stacks of thirteen pennies. Then ask them to use that as a sample to determine how long it would take them to build the entire pyramid.
- 6.
How fast could you make the pyramid Marcelos Bezos made?
- 7.
How heavy is the pyramid?
- 8.
If Bezos now wanted to add more levels to the pyramid, what's the best way for him to do that?
show 67 more questions
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How long did that to create? How much money is there total? Can I get on the Ellen show by doing this for a class project?
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Wow. Didn't know there was a video! How much would this be worth if it was made with nickels/dimes/quarters? What would the dimensions be?
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Who in the world has enough time to make this? Or in nicer terms, how long did this take?
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How many pennies are there total? How much money do you have if you destroy the pyramid?
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How long will it take you to build that? And do you have enough money to do it?
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Given a constant rate of building at 2 pennies per second, how long did it take to build the pyramid?
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If each penny represents 1 cubic yard of material in real life,, how big would the life sized pyramid be?
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How many pennies were in each stack of one step of the pyramid...and how many fewer stacks were added to each subsequent step of the pyramid
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