: Introducing formal vertical calculation methods (addition and subtraction "in a column") and working with parentheses to establish order of operations.

: The book uses diagrams and models to bridge the gap between concrete objects and abstract numbers. Common Feedback

Part 1 of the Grade 2 curriculum typically focuses on consolidating first-grade knowledge and introducing complex arithmetic operations within 100.

: Compared to other programs like Moro, Demidova's approach is often considered more challenging as it requires a higher level of abstract reasoning.

: Many Russian educational sites provide step-by-step "GDZ" (Ready Homework) guides, which can be useful for parents to verify a child's logical process rather than just the final answer.