Addition and Subtraction of Whole Numbers
Channel: Mathematics for Unknown
Date: 2018-05-03

Herb Gross discusses the evolution of addition algorithms from tally marks through place value and shows that subtraction is an alternative form of addition - all in the context of the all-important adjective noun theme.

This material is also discussed in the text "Gateway To Mathematics" online at http://www.mathasasecondlanguage.org/self-guided

Chapter 2: Addition and Subtraction of Whole Numbers

Book: https://drive.google.com/open?id=1JtzGYn00j4tnpebCaliMSlSnDwPzEGAt

Study Guide:  https://drive.google.com/open?id=1rs-v6TwX4gjeoBWG054dY3arh9hCSMgR

Exercise is present in Study Guide.