In view of the research indicating that approaches to teaching mathematics vary in their effectiveness, choosing the appropriate pedagogy is critical to students' mastery of essential skills and ability to apply them. SOLO Taxonomy in Mathematics makes the decision easy with SOLO Taxonomy, a simple but effective model of learning outcomes. Looking through the lens of SOLO, mathematics educators and students can focus firmly on the complexity of the learning outcome - differentiating surface, deep and conceptual levels of understanding. This knowledge then helps to identify explicit next steps and to prompt for understanding.