## Level 6: Structure of composite units of area

At level 6 the student is able to create the structure of a rectangular array. That is, the student is able to visualise a column and row structure and has moved beyond simple counting of squares along a one-dimensional path. The rows and columns are conceptualised as composite units.

*Coordinated row and column structure **Row structure **A lack of row orcolumn structure*

### Composite units of area