|4.5 Morris the Cat||
Environment: One computer station. Students complete the student page and the graph is done with a projection device.
Strategies: Multiple stations - students work individually, in pairs, or in small groups.
GEPA Connections: coordinate graphing, transformations, ...
The graphing of MORRIS provides insight and practice into coordinate graphing using Geometerís Sketchpad. In the process students make predictions on how changes in coordinates would change the shape of MORRIS.
The first goal of MORRIS is to plot given points and connect them to create the face of a cat. Upon completion, predictions are made as to how the face of MORRIS would change if all the (x,y)ís were subsequently replaced by (2x,2y)ís, (3x,3y)ís, (3x,y)ís, and (x,3y)ís. As each graph is created the class discusses and revisits its predictions. Would the change in coordinates enlarge MORRIS in all directions? Make him thinner? Make him taller? Make him wider?
Setting the Stage
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