# Piaget's Developmental Theory: Formal Thought

Illustrates tasks that challenge the thinking of secondary school students, including tasks which involve proportional reasoning, separation of variables, conbinatorial logic, and the integration of these in an analysis of a balanced beam with weights

- Kind: Educational
- Year: 1971
- Runtime: 32 min
- By: Piaget, Jean, 1896-1980, Davidson Films, San Francisco
- Genres: Education, Science, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/piagetsdevelopmentaltheoryformalthought)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/piagetsdevelopmentaltheoryformalthought?play=1)