What are the most common ways Australian school students aged 12-17 years use cannabis?

Among Australian school students aged 12-17 years who used cannabis in the past year, 50% smoked it in a bong and 33% smoked it as a joint. 

Source: Cancer Council Victoria (2018). ASSAD 2017 Statistics & Trends: Australian secondary school students' use of tobacco, alcohol, over-the-counter drugs, and illicit substances. (NCETA secondary analysis, 2019).