Foreword -- Introduction. What ifs -- Worldview: sphere and worldview.-Part I: The general context of education -- 1. Education in a post-industrial world -- 2. Math education and culture: learning theories -- Part II: Epistemological questions on AM and EM -- 3. Foundational issues? Whitehead s Multiperspectivalness -- 4. Language and thought -- Part III: Ethnomathematics and education -- 5. M…