The obook/assess MULTI licence provides several consecutive years digital access with no reactivation charge for life of the edition. An obook/assess MULTI code can be reactivated upon expiry of the active licence period.The obook is a cloud-based web-book available anywhere, anytime, on any device, navigated by topic or by page view. assess is an indispensable online assessment tool, explicitly mapped to the Australian Curriculum that drives student progress through tailored instruction. As well as containing the student text and study tools, this obook offers virtual case studies including interactive maps and timelines, videos and other interactives.