Geoboard

A Geoboard is a Mathematical tool used to explore basic concepts in plane Geometry such as perimeters, area etc and also the characteristics of Polygons. It consists of a physical board with a certain numbers of nails half driven in ,around which rubber bands can be wrapped.

Geoboard were onvented by Egyptian Mathematician Caleb Gattegno ( 1911 – 1988 )

Structure and use

 A variety of boards are used. Originally made out of plywood and brass nails or pegs, geoboards are now are usually made out of plastic. They may have an upright square of either 9, 16 or 25 nails or more, or a circle of nails around a central nail. Students are asked to place rubber bands around the nails to explore geometric concepts or to solve mathematical puzzles.

Geoboards may be used to learn about

plane shapes, translation, rotation, reflection, similarity, co-ordination,

counting, right angles, pattern, classification, scaling, position, congruence, area, perimeter.