Education Technology
Geometry: Perimeter and Area Classroom ActivitiesDownload
arc_lengths_and_sectors

Arc Length and Sectors

Investigate the mathematics of arc length and sectors.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™ Apps for iPad®
Download7,208
area_formulas

Area Formulas

Explore the relationships among the area formulas for parallelogram and rectangles.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™ Apps for iPad®
  • TI-Nspire™
  • TI-Nspire™ CAS
Download8,126
Geo_Exploring_Area_of_Irregular_Polygons_sm

Exploring Areas of Irregular Polygons

Explore different ways to find areas of irregular polygons using the three basic shapes of rectangles, parallelograms, and triangles.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™ Apps for iPad®
Download7,024
Exploring_Diameter_and_Circumference

Exploring Diameter and Circumference

Explore the relationship between the diameter and circumference of a circle.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™
  • TI-Nspire™ CAS
Download6,706
Fixed_Perimeter_Rectangles

Fixed Perimeter Rectangles

Investigate side length and area in a rectangle with fixed perimeter.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™
  • TI-Nspire™ CAS
Download6,445
SideLengthPerimeterAreaofRectangle

Side Length, Perimeter, and Area of a Rectangle

Explore the effects of changing base (or height) of a rectangle on it's perimeter and area.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™
  • TI-Nspire™ CAS
Download6,958
heroHS

The Mailbox

In this lesson, students will visualize that areas of irregular shapes can be found by determining the sum of smaller, more familiar shapes.
  • ax-icon-color-device
    TI-Nspire™ CX series
  • ax-icon-color-device
    TI-Nspire™ CX CAS/CX II CAS
  • TI-Nspire™ Apps for iPad®
  • TI-Nspire™
  • TI-Nspire™ CAS
Download536