| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | complex number | mathematics education in Western countries | A fundamental concept taught in high school and university mathematics courses. | 1 |
| 2 | complex number | mathematics education in Western countries | Taught as an essential part of mathematics education, used to represent numbers in 2D space. | 1 |
| 3 | complex number | mathematics education in Western countries | Taught extensively in high school and college level mathematics as an important concept in algebra and calculus. | 1 |
| 4 | complex number | mathematics education in Western countries | Commonly taught in high school and used in advanced mathematics and engineering. | 1 |