For my lesson I would have students get data from http://www.gbrathletics.com/olympic/skating.htm . We would then make a scatterplot of the data for the 1500m or the 5000m in Excel. We might do both men and women and look at the trends in the data (women are improving more than men) and look at the outliers (1932). We could also extrapolate (2010) and interpolate (1944). This math would be a quick review of 7th grade. In a month or so, students will be ready to make a line of best fit through this data and write a linear equation (y=mx+b) for it. This they would do by hand, as the goal is for them to be able to do these calculations themselves.

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