Education Technology
Geometry: Perimeter and Area Classroom ActivitiesDownload
arc_lengths_and_sectors

Arc Length and Sectors

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Investigate the mathematics of arc length and sectors.
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    TI-Nspire™ CX
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area_formulas

Area Formulas

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Explore the relationships among the area formulas for parallelogram and rectangles.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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Geo_Lesson_6_sm

Comparing Perimeter to Area of a Square

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Analyze the relationship between the area and perimeter of a square.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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Geo_Exploring_Area_of_Irregular_Polygons_sm

Exploring Areas of Irregular Polygons

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Explore different ways to find areas of irregular polygons using the three basic shapes of rectangles, parallelograms, and triangles.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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Exploring_Diameter_and_Circumference

Exploring Diameter and Circumference

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Explore the relationship between the diameter and circumference of a circle.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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Fixed_Perimeter_Rectangles

Fixed Perimeter Rectangles

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Investigate side length and area in a rectangle with fixed perimeter.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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SideLengthPerimeterAreaofRectangle

Side Length, Perimeter, and Area of a Rectangle

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Explore the effects of changing base (or height) of a rectangle on it's perimeter and area.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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heroHS

The Mailbox

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In this lesson, students will visualize that areas of irregular shapes can be found by determining the sum of smaller, more familiar shapes.
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    TI-Nspire™ CX
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    TI-Nspire™ CX CAS
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