Sometimes geoboards are left on the shelf because we don’t know
what to do with them. They can be powerful tools for students to
study, length, area and perimeter. (But remember to be careful
with the perimeter part because the length of one unit is only
measured on the horizontal or vertical, not the diagonal.)
Geoboards can help students experience area so that they can
develop area formulas for themselves. Geoboards in the Classroom
This unit deals with the length and area of two-dimensional
geometric figures using the geoboard as a pedagogical device.
Five lesson plans are provided. The Online Geoboard An applet
simulates the use of an actual geoboard without the usual
limitations of working with rubber bands. Most materials
designed for real geoboards may be used with this online
version. Rectangle: Area, Perimeter, Length, and Width This
applet features an interactive grid for forming rectangles. The
student can form a rectangle and then examine the relationships
among perimeter, area, and the dimension