I love listening to Planet Money, NPR’s economic podcast, on my commute to and from work. And a few weeks ago they did a show that explained how a tiny piece of data like the price of lettuce in Brooklyn contributes to the formulation of the Consumer Price Index (CPI). When I looked up some data on the CPI it seemed to be perfect for students to use when studying Linear Equations so I devised an activity. Listen to the podcast, look at the data and follow the activity. I think the worksheet needs work, but the podcast is great and the data are plentiful!
I love me some Planet Money, and they do a great job motivating this activity.