Boogaard, Sylvia van denHeuvel-Panhuizen, Marja van denScherer, Petra2013-10-042013-10-042007http://hdl.handle.net/2003/3104310.17877/DE290R-6840enGesellschaft für Didaktik der Mathematik510Picture Book as a Prompt for Mathematical Thinking by KindergartnersWhen Gaby was read "Being fifth"conference contribution