Jean Piaget 
Studies in Reflecting Abstraction [PDF ebook] 

The first English translation of Jean Piaget“s only extended treatment of reflecting abstraction – a process Piaget believed to be crucial to understanding human cognitive development
Of great contemporary relevance, the research has significant implications for theories of cognitive development and for education, especially relating to mathematics.
An introduction by the translator provides a comprehensive historical and theoretical context for the book.
An introduction by the translator provides a comprehensive historical and theoretical context for the book.