Handbook of international research in mathematics education. English LD. LD English, D Kirshner - 2002 - api.taylorfrancis.com GSID: eaRbk9xuG04J
Young children's access to powerful mathematical ideas. Dockett S, Perry B. B Perry, S Dockett - Handbook of international research in …, 2008 - books.google.com GSID: AkYXEutYIlkJ