The book "Learning and Practicing Mathematics for 3rd Grade" (Volumes A and B) is intended for students, parents, and educators. Its structure and organization follow that of the school textbook (Student's Book and Workbook) and work in parallel with it. Volume A contains five units, which are structured into 32 chapters. Each chapter is divided into two parts:

• The "Learning" section where the student approaches mathematical concepts and discovers new knowledge. It is framed by theory appropriately designed for young students. It is reinforced with extensions and examples.
• The "Exercises for Solution" section where through pictorial exercises and problems, the student consolidates the new knowledge and "builds" continuity. The exercises have a gradually increasing level of difficulty. They are accompanied by examples that aid in understanding the requirements. They include topics from Mathematics competitions, suitably adapted to the knowledge level of the 3rd grade.

The units are completed with review lessons for evaluation. Following these are the solutions-answers to all of the above.