- About these books
- About the Authors

## Thushan Hettige

**Dr Thushan Hettige**is the Managing Director and the most senior content developer at Decode, also authoring the Decode HSC Chemistry title. His talent in Mathematics has been apparent from his youth, when he became the first primary school student in Australia to complete the Kumon Mathematics programme in 2005. His achievements in Mathematics during his secondary schooling is no less impressive, and include a 2011 VCE (Victorian Certificate in Education) ATAR score of 99.95 with top scores in his Mathematics subjects, and a Silver Medal in the 2011 Australian Mathematical Olympiad.

Thushan has since racked up extensive tutoring experience spanning nearly a decade, and he has utilised his unique and original teaching methods in his detailed solutions to the Mathematics Advanced problems.

## Tim Koussas

**Tim Koussas**is Decode's resident Mathematics expert, with his credentials in Mathematics being phenomenal. After graduating with top scores in his Mathematics subjects in the 2012 VCE (Victorian Certificate in Education), Tim has proceeded to obtain an average of close to 100 in his Mathematics subjects at undergraduate level, before embarking on his PhD at La Trobe University (Melbourne) in Pure Mathematics. Tim has been involved in the development of all of Decode's Mathematics titles, both in the HSC and the VCE.

- Single Volumes
- HSC Biology Topic Tests
- HSC Biology Trial Exams
- HSC Chemistry Topic Tests
- HSC Chemistry Trial Exams
- HSC Mathematics Advanced Topic Tests
- HSC Mathematics Advanced Trial Exams
- HSC Mathematics 3 Unit Topic Tests
- HSC Mathematics 3 Unit Trial Exams
- HSC Mathematics 4 Unit Topic Tests
- HSC Mathematics 4 Unit Trial Exams
- HSC Mathematics Extension 1

- Single Volumes
- HSC Biology Topic Tests
- HSC Biology Trial Exams
- HSC Chemistry Topic Tests
- HSC Chemistry Trial Exams
- HSC Mathematics Advanced Topic Tests
- HSC Mathematics Advanced Trial Exams
- HSC Mathematics 3 Unit Topic Tests
- HSC Mathematics 3 Unit Trial Exams
- HSC Mathematics 4 Unit Topic Tests
- HSC Mathematics 4 Unit Trial Exams
- HSC Mathematics Extension 1