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Introduction to Scatter Plot - Quick Class Survey & Desmos

Today in Algebra we discussed scatter plots and best fit lines. It is really handy to use the Desmos online graphing calculator to quickly graph the points as students say their heights and shoe sizes aloud. I had to measure a few kids before we started, which was fun too.

I would like to find more examples of variables that I can ask my students though. The shorter kids tend to say their heights a bit quietly and I am worried that I might be embarrassing them. I give them another data set in their notes (Life Expectancy vs Time in the 20th century), but I feel like a data set to which they contribute is more valuable and memorable.

My 9th period's Height vs Shoe Size Data


  1. How about number of pets vs. # of things to which they are allergic?


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