I printed out the first 10 pages from Year 1 of the Centre for Innovation in Mathematics Teaching's Mathematics Enhancement Programme, decided to skip the actual lesson plans for the first few pages (since I was pretty sure Erika already got the concepts involved), and worked on the worksheets with Erika.

The only thing she had trouble with was an exercise on permutations

**( at the bottom of page 4 )**

She really didn't seem to understand the idea, so a couple of hours later I got out the Cuisenaire rods so we could practice. It made total sense to her with

**( concrete objects )**

I'm impressed so far with the Mathematics Enhancement Programme, and am looking forward to trying out some of their lesson plans soon.