Desenează poligoane regulate !

http://www.educa.madrid.org/web/cp.claracampoamor.fuenlabrada/flash/area/matematicas/380.swf

                           

Tabla înmulţirii

http://www.gobiernodecanarias.org/educacion/9/usr/eltanque/tablasnuevas/tablasnuevas_p.html