Six-pointed star. Credit: Ken
A pilot correspondence course started in January 2015 for Year 12 students who plan to take STEP Mathematics papers in Year 13. It is intended for students who would not otherwise receive much help with STEP.
The assignments (and their 'postmortems') are being published online as the course progresses. Each assignment starts with some warm-up exercises. Then there is some preparatory work leading to a STEP question. Finally, there is an unrelated warm-down exercise.
Further STEP resources including information about the popular NRICH STEP preparation course online are available in this previous post.