I just noticed a tweet by James Grimes concerning STEP. Here is what it looked like:
I went to the site to investigate and it looks an interesting and useful resource. I've signed up to the site and this is what my profile currently looks like:
Assignments can be downloaded in PDF format and looking at the first assignment, the site should provided a good source of questions that are compatible with the sort of 4 unit HSC questions that I'm currently working through.
Here's the central STEP question in Assignment 1:
