Thanksgiving Taters
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?
Act Two
 3.
What information would be useful to know here?
 ImageThe total number of taters.
 Teacher noteStudents may want to know how long it took him to peel one potato. They should be encouraged to take out a timer and time him as you replay the video.
Act Three
 VideoThe answer.
 Teacher noteOkay, admittedly, the content here (rates) is super basic. The practice here (modeling) isn't. If students make straightforward rates calculation, their answer will be wrong. They need to ask themselves, "Why might my model be too simple? Is it underpredicting or overpredicting?"
It turns out that the first potato he peeled was rather small relative to the rest. After you play the answer find out who had the closest initial guess (one clap) and who had the closest mathematical answer. Ask that second person what kind of model she used that got her so close to the exact answer. How did she adjust her mathematical answer to bring it in line with reality?"
That's modeling.
Sequel
show 55 more questions












If it takes 30 seconds to peel a potato, how long will it take to peel a 5 pound bag of potatoes?

If each potato takes the same amount of time to peel, how long will it take to peel all the potatoes?











What is the ratio of the weight of the peel to the weight of the potato? Is that constant no matter the size of the potato?




What percent of the potato's weight just went in the garbage disposal so how much of the price paid just got thrown away?


How long must you wash your hands to get rid of all of the germs?



How many swipes of the peeler will be required to peel the whole bag?



















how long would it take if you have 20 potatoes and it takes 36 seconds to peel each potato?



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