| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | math textbooks | Russia | Focused on mastery of foundational mathematical principles | 1 |
| 2 | mathematics education | Russia | Focus on abstract theory and mathematical rigor in math education | 1 |
| 3 | mathematics education | Russia | Strong emphasis on mental calculation and minimal use of calculators | 1 |
| 4 | mathematics textbooks | Russia | Frequently covers advanced topics and mathematical olympiad preparation | 1 |