For Year 8 Science. A downloadable pdf file that includes a unit overview and a series of lessons, resources, activities and tasks. The content descriptors for these units are from the Australian Science Curriculum Version 2.0. The focus of these Units has been developed from the Key Focus Areas of the Great Barrier Reef Outlook Report 2009. The Units encourage students, teachers and their communities to follow the main aim of the Reef Guardians – to be stewards of the environment.