1. Walking on all fours -- 2. The path of an object launched by a sling -- 3. The ping-pong ball (or the hoop) -- 4. The slope -- 5. Building a road up a hill -
Originally published in English in 1976, the book draws on and extends our knowledge of the process of learning. The subject of the study is the general stage i
Originally published in English in 1976, the book draws on and extends our knowledge of the process of learning. The subject of the study is the general stage i