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Middle Grades Math: Geometry Classroom ActivitiesDownload
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Building a Garden Fence

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In this activity, students will use basic concepts of perimeter and area to investigate a classic problem situation requiring maximization. They must decide how to build a garden fence to enclose the largest possible area.
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    TI-84 Plus CE
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    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download5,367
step2

Changing Before My Eyes

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In this activity, students will discover how pictures formed by graphing ordered pairs can be stretched (and shrunk) by multiplying (and dividing) the coordinates.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download242
step1

Comparing Area of Rectangles

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In this activity, students discover the relationship between a change in the dimensions of a rectangle and the change in the corresponding area.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download145
step2

Making Triangles

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In this activity, students will investigate properties of triangles, classify the various types of triangles, and determine if specific side lengths will make a triangle or not.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download131
step1

Mirror, Mirror, on the Graph

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In this activity, students review basic geometry vocabulary while investigating reflections on a coordinate grid.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download139
step2

Move it

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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.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download143
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Transforming Fish

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In this activity, students will discover how pictures formed by graphing ordered pairs can be stretched (and shrunk) by multiplying (and dividing) the coordinates.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download737
step3

Vertical Angles

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In this activity, students visualize and explore the angles that are formed when two lines intersect. By measuring angles formed by intersecting lines, they enhance their understanding of vertical angles, supplementary angles, and a linear pair.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download219