Boat in the River
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 Three
 VideoAnswer
 Teacher materialStudent work
Sequel
 3.
If your mathematical answer and the actual answer disagreed with each other, suggest some reasons why.
 4.
How long would it take him to go down the down escalator while standing still?
 VideoAnswer
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How long til he reaches the top? I love the way you used music to keep a tempo...very important.

Why haven't we seen this here sooner? How long to go up the downscalator?


Wow, how long is it going to take to go up the backwards escalator given the other rates.







How long will it take him to reach the top with the escalator working against him?




































How long will it take Dan to ascend the escalator going the wrong way?

How long will it take to get up or down stairs with or without an escalator?


Predict how long it will take Dan to walk up the down escalator. Support your answer.

Are you going to try to determine which is faster and how much faster: the stairs or escalator?



Which way is quickest: walk stairs up, walk stairs down, ride escalator up, or ride escalator down? What about running up down escalator?


What is the comparison in rates for going up an escalator, stairs, and an escalator the wrong way?









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