The book "Learning and Practicing Mathematics for 3rd Grade" (Volumes A and B) is aimed at students, parents, and educators. Its structure and organization follow that of the school book and works in parallel with it.

Volume B contains four sections, which are structured into 28 chapters. Each chapter consists of two parts:

• Learning: The student approaches mathematical concepts and discovers new knowledge. It is framed by theory suitably adapted for young learners and is reinforced with extensions and examples.
• Exercises for Solution: Through picture exercises and problems, the student consolidates the new knowledge and "builds" upon it. The exercises present a graduated level of difficulty and are supported by examples that aid in understanding the requirements. They include topics from math competitions, appropriately adapted to the cognitive level of the 3rd grade.

The sections conclude with review lessons for assessment. Following these are the solutions – answers to all the above.