. . "Spanish language Reading materials." . . "Arithmetic." . . "Aritmética Literatura juvenil." . . "Addition." . . . . . . . . "Juvenile works" . . "As Max and Sara explore the farm, they discover doubles in all sorts of places. Learn to solve addition problems where both the numbers to be added together are equal." . . . "Electronic books" . . . . . . . "Diversión con dobles en la granja" . . . "Suma Literatura juvenil." . .