This book aims to contribute to the proper preparation of third-year middle school students in the biology course.

Each unit includes:
- Presentation of each lesson's content through concise diagrams and question-answer formats
- Answers to all exercises in the "Student's Book" (let's consider, questions-problems-activities, small researches and assignments, questions-problems-activities for revision, small researches and assignments for revision)
- Supplementary exercises of all types (development, multiple choice, true-false, matching, etc.) to consolidate new knowledge
- Hourly evaluation criteria

Following are the answers to all activities in the "Workbooks" and "Laboratory Guides," as well as two-hour evaluation criteria for the entire syllabus.

At the end of the book, answers to all supplementary exercises and evaluation criteria are provided.