Table of Contents: “…Exploring new knowledge: the relationship between perimeter and area --…”

Table of Contents: “…Subtraction with regrouping: approaches to teaching a topic -- Multidigit number multiplication: dealing with students' mistakes -- Generating representations: division by fractions -- Exploring new knowledge: the relationship between perimeter and area -- Teachers' subject matter knowledge: profound understanding of fundamental mathematics -- Profound understanding of fundamental mathematics: when and how is it attained? …”