| Age | New blocks | Blocks common to 2008 modified |
|---|---|---|
| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2008 and 2012 Mathematics Long-Term Trend Assessments. | ||
| 9 | M1 | M2, M3, M4, M5, M6 |
| 13 | M1 | M2, M3, M4, M5, M6 |
| 17 | M1 | M2, M3, M4, M5, M6 |