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composition of geometric figures equivalent with five pieces poligonali form assigned useful for learning and coordination of movements for the children of primary schools.for pupils of the school, to explore the concept of equivalence, and for adults as a hobby soothing
composition of geometric figures equivalent with five pieces poligonali form assigned useful for learning and coordination of movements for the children of primary schools.for pupils of the school, to explore the concept of equivalence, and for adults as a hobby soothing