A few adjustments need to be made to the maps for this activity, in order for students to arrive at answers matching those in the tables in the Guide. You may either make the appropriate changes on the maps illustrated in your copy of the Guide, by comparing them to the corrected maps, or you may enlarge and use the corrected maps that follow. Below is a corrected version of the answer key. Please use this version in checking students' answers based on the calculations from the corrected maps. The class develops a water index-an indication of the group's feelings and values about water and its uses.
Students can then graph their findings.
John Etgen, Project WET Montana Coordinator, shares with us graphs that were developed in diverse areas throughout Montana. Following are these graphs and brief descriptions of the areas in which they were produced. Please feel free to use this information and the resulting graphs to compare with the water indexes produced within your own workshops or classrooms. Or you may want to distribute these graphs and ask students to analyze them and describe the areas in which they believe the graphs were generated. After students have submitted their analyses, you can share with them the descriptions provided by John.