Education Technology

Count Them Up! Using the TI-73 Explorer

Published on 06/09/2008

Activity Overview

Students will investigate the areas of rectangles and squares by splitting them up into unit squares and/or half-unit squares and combining them.

Before the Activity

  • See the attached PDF file for detailed instructions for this activity.
  • Print pages from the attached PDF file for your class
  • During the Activity

    Students will:

  • Count individual unit squares to find area
  • Combine equal rows of unit squares to find area
  • Combine equal columns of unit squares to find area
  • Combine squares and parts of squares to find area
  • After the Activity

  • Review student results
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary