| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | sequence | mathematics education in the US | Understanding and manipulating sequences is a fundamental skill in both US mathematics education and computer programming. | 3 |
| 2 | isometry | mathematics education in the US | The concept of isometry is fundamental in US geometry education, teaching transformations that preserve distance and angles. | 2 |