Teachers' Guide to Primary Mathematics

Generative Understanding

Extension of a form ("know-how") is infinite !!

The learning style of memorizing know-how's breaks down soon.
Learning mathematics is
- not to memorize what teachers say or what are written in textbooks,
- but to understand generatively each subject he/she meets in mathematics class or anywhere.

Core	:	Primitive images, ideas in real life, etc.
Extension	:	Those which are generated from the core. ("Textbook" is an example of extension, where you should find a core.)