Introducing the concept as "equal groups" and learning the basic multiplication tables. Problem Solving:
Mastering facts within 20 and column addition/subtraction within 100 (both with and without regrouping).
If you are helping a student prepare for these tests, focus on these core Russian curriculum topics for Grade 2: Reading and writing numbers up to 100. Understanding place value (tens and ones). Arithmetic Operations: zadaniia po matematike 2 klass avtor kozlova rubin skachat
If you need the physical workbook for the "School 2100" system, retailers like Labirint carry the Kozlova and Rubin "Control Works". 2nd Grade Math Study Guide
To find 2nd-grade math assignments by S.A. Kozlova and A.G. Rubin, you are likely looking for the (Контрольные работы) or "Didactic Materials" (Дидактический материал) that accompany the "School 2100" curriculum. Where to Find Materials Introducing the concept as "equal groups" and learning
The Kozlova/Rubin materials are known for "non-standard" problems that require logical thinking rather than just calculation. Practice Resources
Solving multi-step word problems involving "more than" or "less than". Understanding place value (tens and ones)
Basic geometric tasks, such as finding the of shapes. Logical & "Non-standard" Tasks: