It contains building blocks, plastic bottles, calico, ping-pong balls, cardboard, sandpaper, feathers and other familiar objects. The game is designed to allow children to pick out objects which are identical in their materials, sizes, and shapes. We want to sharpen their powers of recognition. "
「不是的，這個袋子裡裝的是積木、塑膠瓶、裝牛奶的空紙盒、碎花布、乒乓球、硬紙片、粗砂紙和雞毛等各式各樣的東西，玩的時候，識小朋友輪流把手伸進袋子裡，摸兩樣東西出來，這兩樣東西必須在質料、大小或是形狀上相同。」