Essential aid for every high school student
- Definitions of concepts
- Formulas and properties
- Basic methodology

This booklet, unique in Greek literature, will be useful during your high school studies, as well as in your preparation for the nationwide exams.
It contains the theoretical knowledge (definitions of concepts, formulas, and properties) that you have been taught in previous grades and need to know for the continuation of your studies.
It also includes the basic methodology for solving exercises and problems, with representative examples.
My many years of experience as a Mathematics teacher and author make me hope that this manual will contribute, even slightly, to your successful engagement with Mathematics.