My students studied graphing during our first math unit this year. Graphing lends itself to get-to-know-you activities — students can survey each other to collect data — and it provides an entry point for students of all math abilities.
Once my students understood how graphs work and how to create accurate graphs, I started to wonder how I could up the ante. How could I promote critical thinking with this relatively straightforward math unit?
One of my students handed me the answer when he brought in a graph that he had clipped from the newspaper to add to our graph collection. As I looked over his graph, I thought, "Hey, wait a sec! This graph is downright misleading." As I pointed out the graph’s flaws to my students, their eyes widened at the idea that a newspaper might seek to mislead with a graph.