Teach children the basic concepts about numbers with this book containing puzzle pieces and a journey through historic scenes. Una historia de n meros is an innovative way for children to learn their numbers based on illustrations that recreate prehistoric times. Una colecci n sobre los conceptos b sicos con piezas de puzle y un paseo por los escenarios de la historia que entusiasmar a los m s peque os. Los n meros se presentan de...