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Middle Grades Math: Geometry Classroom ActivitiesDownload
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Building a Garden Fence

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.
  • TI-84 series
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Changing Before My Eyes

In this activity, students will discover how pictures formed by graphing ordered pairs can be stretched (and shrunk) by multiplying (and dividing) the coordinates.
  • TI-84 series
Download379
step1

Comparing Area of Rectangles

In this activity, students discover the relationship between a change in the dimensions of a rectangle and the change in the corresponding area.
  • TI-84 series
Download286
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Making Triangles

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.
  • TI-84 series
Download276
step1

Mirror, Mirror, on the Graph

In this activity, students review basic geometry vocabulary while investigating reflections on a coordinate grid.
  • TI-84 series
Download223
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Move it

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.
  • TI-84 series
Download263
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Transforming Fish

In this activity, students will discover how pictures formed by graphing ordered pairs can be stretched (and shrunk) by multiplying (and dividing) the coordinates.
  • TI-84 series
Download1,720
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Vertical Angles

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.
  • TI-84 series
Download432