Qualitative analysis of children's learning of programming in the context of a developing culture of open-ended project work in a primary school C.T.I. Technical Report TR 94.06.33 - Γεωργιάδης, Παναγιώτης; Γυφτοδήμος, Γ.; Κυνηγός, Χρόνης (Ινστιτούτο Τεχνολογίας Υπολογιστών Computer Technology Institute Computer Science and Engineering Department, Patras University, 1994)