Mathematics Students discussion

Good day!
I am authoring a seven-book series on 'Problem Solving', the first four books use fun activities of puzzles and games as teaching aids.

Need a technical opinion on how good the content is.
To learn from the book needs only basic high school education.
To critique the book would need a mathematician!

Link to free ebook:
http://www.problemsolvingpathway.com/...

General Description:
A self-learning guide, teaching problem solving.
This book uses puzzles and games, as tools to learn fundamental skills and concepts.

Goal: Make learning easy and fun.

Intended Audience:
Minimum of high school education.
Anyone needing analysis, problem solving, decision making, skills.
College-level students, NEET’s (Not in Education, Employment, Training), the employed.

The problem solving angle:
Each puzzle/game is considered a problem to be solved.
Problem solving phases – Identification of the problem, Ignoring redundant and irrelevant information, Analysis, Getting wrong or sub-optimal solutions, Zeroing in on the optimal solution (deciding), Result versus solution, Implementing the solution, Reviewing your solution (seeking user and stakeholder feedback), Re-implementing a better solution (process improvement).

Genres: Life-skills, "How To", Self-help, Self-learning, Self-improvement, Education.

Thank you,

Ashley C. Fernandes
Problem Solving Pathway
(Problem Solving The Fun Way)
Learn More: www.problemsolvingpathway.com
Communicate: info@problemsolvingpathway.com

This sounds exciting :)
I'm keen be involved... hopefully oneday I'll be able to write a book too!

Shortly introducing a revised (final) version of the first five books.
If you want reader samples (PDF) please send your email address.
Will be delighted with feedback. And please recommend to others.