Question: 3. When graphing a student's data, what should a teacher do to indicate when a change of instruction occurs? draw a phase change line on

3. When graphing a student's data, what should a teacher do to indicate when a change of instruction occurs? draw a phase change line on the graph change the color of the data points use a different shape (dots, stars) for the data points change the format of the data line (dotted line, double line)

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