9 circles: 51 pieces in total representing 1 whole, 1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10 and1/12 , value. A variety of pie-shaped teaching aids help children visualize fractions. 51 rectangles: including whole, half, third, fourth, fifth, sixth, eighth, tenth and twelfth. 2 pens.