"I can feel it making my brain bigger": from a Year 8 student at Pinjarra Senior High School (SHS) halfway through the two-year Thinking Science Program. Pinjarra was a pilot school for the program in 2009/10 and a growing number of schools in Western Australia (WA) are implementing this program in Years Seven to Nine as part of the school science curriculum. "Thinking Science Australia" is being coordinated from the Graduate School of Education at The University of Western Australia (UWA) and supports teachers, schools and students from the north to the south of WA, and from Queensland, New South Wales, and Victoria. This article will give the reader a brief overview of "Thinking Science Australia" and look at its implementation at Pinjarra SHS. (Contains 2 figures, 2 tables and 2 photographs.)