Each book contains:
- Detailed presentation of the material of each teachable unit using inductive and visual methods, based on the modern principles of interdisciplinary teaching.
- Comprehensive explanations and enlightening comments on any topic or even parallel material given in each unit, with the main purpose of making the lesson understandable and attractive for both teachers and students.
- Clear and complete answers to all questions and interdisciplinary tasks of both the Student's book and the Teacher's book that accompanies it.
- Supplementary exercises of open and closed type of all kinds for the consolidation of the material.
- Samples of Student Evaluation Criteria.