Please ensure you are buying the correct edition reactivation code.
This reactivation code will give access to Essential Mathematics for the Australia Curriculum Third Edition only.
This reactivation code cannot be activated without the 16-character code on the inside front cover of your second-hand textbook.
If you do not have a secondhand textbook, do not purchase this reactivation code.
Your second-hand textbook should look like this:
![](https://www.cambridge.edu.au/education/files/9315/9781/0625/9781108772815_180.jpg)