The first edition had narratives based on tables of numbers — implicit graphs — but very few graphs. The second edition makes these implicit graphs explicit – there are more than 80. The addition of simple demand and supply graphs and production possibilities frontiers fits smoothly into the existing flow of the book’s narrative, providing the students an additional powerful tool for their understanding of the material. Graphs now appear in chapters on demand and supply, rent controls and minimum wages, explanation of choosing output where marginal revenue equals marginal cost, externalities, labour-hiring decisions, and in the macro text, in chapters on aggregate demand and aggregate supply (complete with output gaps and shocks), and the money, loanable funds and foreign exchange markets.

##### Graphs in the Lecture Slides

The primary Lecture deck is a curated set of slides set up as I teach the chapter. Most analytical graphs have transitions that appear (like shifting curves) as you click through.

The secondary deck contains alternative versions of graphs in the lecture deck – e.g., smaller-sizes of graphs in the Lecture deck but paired with tables of numbers; Figures in the textbook that contain multiple graphs. Also included are all textbook Refresh Questions, which you can add to show how to work through the problem or to stimulate a discussion about the answer.

##### Narrated Dynamic Graphs

The PowerPoint graphs, built from the textbook graphic files, are the basis of the Narrated Dynamic Graphs. For each analytical graph in the textbook, there is a short MP4 video. In a voice-over, I talk through the meaning of the graph, and traces shifts of curves and changes in outcomes. There is a moving cursor directing students’ attention to the portion of the graph being discussed in the narration. These MP4 files, which tell the story of each graph, can be viewed online or on a mobile device.