What is Geo Board ?
A geo board is a mathematical manipulative used to explore basic concepts in plane geometry such as perimeter, area and the characteristics of triangles and other polygons. It consists of a physical board with a certain number of nails half driven in, around which are wrapped rubber bands.
Geoboards were invented and popularized in the 1950s by Egyptian mathematician Caleb Gatteg (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 Originally made out of plywood and brass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 lattice 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.
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