. Thus this map illustrates the description of the Mathematical Literacy progress variable in terms of the Levels from page
316 as well as the Topic Areas and the Modeling Types in the items design. The
Topic Areas reflect the earlier placement of Arithmetic in the curriculum than
Geometry and Algebra. The ordering of Modeling Types is generally consistent
with what one might expect from the definitions of the Levels, except for the
Arithmetic Abstract Modeling items, which seem to be somewhat easier than
expected. This is a topic that deserves a follow-up investigation.