Research shows that when students engage with mathematical inquiry their problem-solving skills are strengthened. Demands in the revised Australian curriculum raised problem-solving of new senior secondary mathematics assessment, specifically in Queensland Problem-solving and Modelling Tasks (PSMTs). The challenge for Queensland was to scale inquiry pedagogies through secondary state schools in a way that was age appropriate and curriculum-aligned. A system, researcher and teacher collaboration produced a suite of resources and capability materials to build inquiry pedagogies of secondary teachers and ultimately students' problem-solving skills.