Chapter 1 Action and Cognition in Piaget’s Genetic Epistemology and in Hegel’s Logic

Chapter 2 Representation and Meaning

Chapter 3 Philosophical and Pedagogical Remarks on the Concept “Abstract”

Chapter 4 What is Mathematical Ability and How do Ability Differences Emerge in Mathematics Education?

Chapter 5 Mathematics Education and Society

Chapter 6 Preliminary Remarks on the Relationship of the Principles of Teaching Arithmetic to the Early History of Mathematics

Chapter 7 The Development of Arithmetical Thinking: On the Role of Calculating Aids in Ancient Egyptian and Babylonian Arithmetic

Chapter 8 The First Representations of Numbers and the Development of the Number Concept

Chapter 10 Abstraction and Representation

Chapter 11 The Concept of Labor in Historical Materialism and the Theory of Socio-Historical Development

Chapter 12 Tools of Science