Shows how to use the open-end abacus. Discusses the history of the decimal number system and principles of its use, such as grouping in addition, regrouping in subtraction and comparison of number values. Great UNIVAC footage a Man in veil/shawl counting with rocks, kids using abacus/coins/pointer and wooden discs.

Help us get more films like this online! This film was digitized and uploaded by the A/V Geeks thanks to contributions to this project:

License at Buy this film on DVD. [wp_cart_button name=abacus-1958 price=12.95][show_wp_shopping_cart]

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.