Hassan is trying to figure out if Rocklandia has more igneous, sedimentary, or metamorphic rocks. Help him make a bar graph to solve this problem.
Counting both basalt types as a singular point
Counting each basalt type independently
Andesite
Basalt (smooth and/or columnar)
Kimberlite
Rhyolite
Obsidian
Pāhoehoe
Pumice
Tuff
Granite
Pegmatite
Diorite
Copper porphyry
Red sandstone
Yellow sandstone
Coal
Conglomerate
Shale
Lapis lazuli
Marble
Slate
Gneiss
According to Hassan's bar graph, Rocklandia has the most different types of igneous rocks, and the fewest types of metamorphic rocks.
Note that there are two forms of basalt to be placed into the graph. You may decide if you want students to count them as one type or rock or two (both solutions are shown above)
Remind students to name the x and y axis on their respective slates.