Piaget's developmental theory
Subtitle: III. Conservation.
Contributors: Davidson Films.
Publisher: Davidson Films
Published: 1960
Place of publication: San Francisco
Language: eng
Format: Motion picture
Number of pages: 28
Subjects: Piaget, Jean, -- 1896-; Cognition in children.
Description: Summary: The emergence of certain learned perceptual and cognitive processes appears to be developmental in nature, relating primarily to age.  This film deals with one category of cognition: conservation.