After teaching my students about scatterplots, correlation, and the line of best fit, I take a day for them to do a hands-on lab, in which they measure their height (in inches) and their forearm length (from the tip of their elbow, to the bony point on their wrist), and we plot the class data, write the equation of the line of best fit, and then use the equation generated both forwards and backwards. They will need 45 minutes to an hour to do this in class.
I have found that if the students br