| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/scatterplot_tutorial.html | Chapter 1. Graphing Tutorial
| 50abd604b11c0f115b000000 |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/envsci_graphing_tutorial_graphing_skills_mini_tutorial.html | Chapter 1. Graphing Skills Tutorial
| 50d213cdb11c0f721b000000 |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/introduction_to_graphing.html | Chapter 1. Introduction to Graphing
| 51d2d191757a2eb53c00000d |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/scatterplots.html | Chapter 1. Scatterplots
| 51d2fa80b62f8b6d1700000e |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/bar_graphs.html | Chapter 1. Bar Graphs
| 51d2fb10b62f8bdf1d000003 |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/area_graphs.html | Chapter 1. Area Graphs
| 51d2fb3ab62f8bce14000011 |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/line_graphs.html | Chapter 1. Line Graphs
| 51d2fb50b62f8bce14000015 |
| http://digfir-published.macmillanusa.com/envsci_graphing_tutorial/pie_charts.html | Chapter 1. Pie Charts
| 51d2fb61b62f8bce14000019 |