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Bolondi, Giorgio and Ferretti, Federica and Lovece, Stefania and Vannini, Ira and Franchini, Elena and Salvisberg, Miriam and Sbaragli, Silvia (2015) The formative assessment in mathematics education. First results of an international project. In: National Conference “Encounters with Mathematics n. 29”,, 6-7-8 November 2015, Castel San Pietro Terme, Bologna. (Unpublished)