Average 8th-grade scale scores, Finland, by mathematics content area, TIMSS 1999 and 2011
| 1999 | 2011 | |
|---|---|---|
| Numbers | 531 | 527 |
| Data representation | 525 | |
| Data and chance | 542 | |
| Geometry | 494 | 502 |
| Algebra | 498 | 492 |
| Measurement | 521 |
Source: Mullis et al. (2000); Mullis et al. (2012)