Institution: | 1. Dipartimento di Matematica, Università di Modena e Reggio Emilia, via Campi 213/B, 41100, Modena, Italy 2. Department of Mathematics, GPIMEM, Graduate Program in Mathematics Education, Sao Paulo State University “Júlio de Mesquita Filho”, Avenida 24A, 1515 Bela Vista, Rio Claro, SP, Brazil
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