The lesson is accompanied by detailed lesson notes and a software simulation. An initial draft of the notes has been made available, with permission - see the link below. The materials are being readied for publication within the Maths300 project of Education Services Australia.
Appendix 8: Maths of Lotto – Lesson Notes
http://www.educationaldesigner.org/ed/volume1/article15/pdf/maths_lotto_draft.pdf