This investigation promotes student learning by using 20 different cell phones from different decades to establish a cladogram.
Typically cladograms are used in biology to show the similarities and differences between organisms, but this one elicits student interest and can be used as an initial activity to stir up discussion. This investigation can be used prior to "Investigation 2" as Investigation 2 is focused mainly on organisms.
You just need to print and cut out the boxes and present them to students.
*Hint* The investigation could be challenging for some students and will require some guidance. The key here is to have the students work together and come up with their own version of the answer. "Talk time" and "Phone Memory" can be left out from the cladogram to simplify the process. The challenging aspect is on purpose to allow students to work through the different aspects of a cladogram. Through my experience, the students were all engaged in trying to figure out the cladogram. Answers could also vary as well.
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