彩色圓柱體組合

Four boxes, each containing ten sets of cylinders. The red cylinders are equal in height but decrease in diameter. The yellow cylinders decrease in height as well as in diameter. the green cylinders decrease in diameter but increase in height. The blue cylinders are of equal diameter but decrease in height.
Direct Aim: Visual Discrimination of height and diameter.
Indirect Aim: To develop the child’s sense of visual linear perception.