Education Technology

Middle Grades Math: Move it
by Texas Instruments

Updated on August 26, 2014


In this activity, students investigate transformation, slides and scaling, of a triangle using lists. They will add, subtract and multiply numbers to the list and describe the changes that have occurred. Students are to make the connection between changing the x- or y-values and the transformation.

Key Steps

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    In this activity, students will enter the coordinates of the vertices of a triangle into two lists. Then on the Home screen, they will add or subtract a number from one of the lists. Students will then view the graph of the original triangle and the transformed triangle, determining how the x-values changed and the triangle moved.

  • Image

    In Problem 2, students will translate the y-values and observe the effect on the triangle. In Problem 3, students will multiply the x- and y-values by a scale factor and determine how the triangle changes.