They cost peanuts
56
skips
skips
44
questions
questions
Act One
 1.
Which salted peanuts are the better deal?
 2.
What information would be useful in figuring this out?
 3.
What assumptions are we making?
 4.
What is a guess for which peanuts are a better deal?
Act Two
 Teacher noteWhile the loose peanuts are always going to be cheaper (the loose peanuts are about $0.16/oz vs about $0.18/oz for the bagged peanuts) there are a variety of correct ways to explain how they reached that answer. For example, students could:
find the cost per ounce of both peanuts
find the cost per pound of both peanuts
find out how much 20 oz of the bulk peanuts costs and compare that to the 20 oz bag of peanuts
The key will be for students to be able â€œmak[e] plausible arguments that take into account the context from which the data arose.â€ (Standard for Mathematical Practice 3)
I have no problem with students using a calculator with this problem. Not only is this a tool we would use in real life and supported by Standard for Mathematical Practice 5, but the sad reality is that if students do not understand the math content, the calculator is not going to help them.
Sequel
show 44 more questions





better deal? does the salt make for significantly less peanut per pound?














How many lbs of salted peanuts need to be in the bag to make it a better deal than self selecting the amount?


Is it a better deal to buy the peanuts that are already bagged or the ones you bag yourself?























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