A typical 4.5-year-old on Piagetian conservation tasks: number, length, liquid, mass, and area. (Captioning provided by the IT Department at Inver Hills Community College, Inver Grove Heights, MN.)
- 13 жыл бұрын
A typical child on Piaget's conservation tasks
- Рет қаралды 11,836,836
Пікірлер: 22 М.