● lists of sets in the power set of a given set and knowledge that the total number of set equals 2*n* for *n* elements in the given set

● solution of equations such as *x*² = 17 as required in measurement situations; for example, using pythagoras theorem

● graphical representation of simple inequalities such as *y* ≤ 2*x* + 4

● selection of a type of function (linear, exponential, quadratic) to match a set of data

● translation between forms (table, graph, rule, recurrence relation) of representation of a function