Project 3: Multiplication on a circle (CRO, GER)
Read this book made on StoryJumper
Continuation:
Download of the PDF
n =40, 100, 120, 200
There is a nice applet that can be used to to discover more about this modular multiplication:
points = 400, multiplication number =21
easy to use (without animation)
have a look here and discuss our work! It is the PDF that you can download or watch.
Multiplication tables for 3 and 5 (GER)