
ESCOT Problem of the Week: Archive of Problems, Submissions, & Commentary 
Try Shoelaces 1 before you do this problem.In this simulation, you will apply your graphing skills to help workers choose ribbon lengths when they gift wrap packages.
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In Shoelaces 2, we wanted students to think about the qualities of a good window for graphing.When graphing with a graphing calculator, it is always beneficial to students to think about what a good window would be for viewing their data. Similarly on paper, we want them to think before they graph, having their scale be determined by characteristics of the data they're graphing, rather than by the characteristics of the paper.

Page Line Fit Use your line of best fit to answer these questions. 1. What length of ribbon do you need for a box with a dimensional sum of 3cm? about 25cn 2. What length ribbon do you need for a box with a dimensional sum of 70cm? about 168 3. Polly is willing to wrap packages with dimensional sums ranging from 3cm to 70cm. What maximum X and maximum Y values would you use on a graph to help her employees choose ribbon lengths for packages? Explain how you chose this scale. 70 and 170 I put the max values she could wrap on the x axis then i put the line of best fit on. then i made it big enough to see. 
Karen F., age 14  Issaquah Middle School, Issaquah, WA
Scott F., age 13  Issaquah Middle School, Issaquah, WA
Josh H., age 12  Issaquah Middle School, Issaquah, WA
Kelly M., age 13  Issaquah Middle School, Issaquah, WA