This book was written with the smooth transition of students from primary school to the first grade of high school in mind. We have tried to simplify the new concepts that will be taught, while maintaining mathematical rigor, and we have structured the exercises they will encounter in a way that they feel comfortable solving them.

The book consists of two parts: Algebra and Geometry. Each chapter consists of units, each of which contains theory in the form of questions and answers, instructions and methods on how the student should think in each case, solved exercise examples, useful observations, unsolved exercises for necessary practice, and comprehension questions. Each unit is completed with self-evaluation criteria. It is followed by theory review, review exercises, and tests covering the entire material. At the end of the book, there are answers to all the exercises, comprehension questions, and tests in this book, as well as answers to all the exercises and activities in the textbook.

Taking into account the sensitive age of the students and aiming to cultivate a love for Mathematics, we believe that this effort will also achieve its goal.