Geometry: 2-D Shapes with Geoboards

Using GEOBOARDS is a lot of fun for kids. The geoboards can be used to reinforce two-dimensional shapes (polygons). 

Polygons have length and height (no depth). Polygons are closed figures made with 3 or more line segments (sides), with only one (1) interior space.
 

Younger students can practice making common shapes: triangles, squares, and rectangles.

Older students can also make

• pentagons (5 sides, 5 corners)
• hexagons (6 sides, 6 corners)
• heptagons (7 sides, 7 corners)
• octagons (8 sides, 8 corners)
• nonagons (9 sides, 9 corners)
• decagons (10 sides, 10 corners)

 Vocabulary:  2-dimensional, polygon, side, corner, straight, closed figure, line,
                       interior, line segment, angle, vertex (corner) 

Used hair bands instead of elastics here!

Geoboards come in different sizes.



 



 
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