One of my visitors has produced a .pdf eBook on Basic Maths, called  MATHIZATION and it is very interesting to read and catch up on all those basic mathematical manipulations.

Here is contact:

mathization@aol.com  

jonwbpa@aol.com

He is offering the .pdf as a download and after reading it you can offer him a donation via PayPal. 

 

20/2/2021