Form: all things geometry work well here. Form also fits if you want students to pay attention to the shape of graphs, for example when transforming functions. -Logic: maths is full of rules and systems, a lot of which can be seen in number topics; from prime factorisation to exponent laws, adding fractions to critical path analysis. Probability also fits well here (although it can be argued that we don't always make logical choices when we consider luck!). -Relationships: think algebra...
