# Addition and Subtraction Algorithms

Introduces addition and subtraction algorithms based upon their properties and previously learned facts about the numeration system. Introduces the Israeli kibbutz as an ongoing experiment. Looks at the lifestyles in several communities, the historical development of the concept, and the problems and satisfactions of communal living.

- Kind: Educational
- Year: 1965
- Runtime: 21 min
- By: National Council of Teachers of Mathematics
- Genres: Education, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/additionandsubtractionalgorithms)
- 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/additionandsubtractionalgorithms?play=1)