Vol. 41 Num. 1 (2021) - front cover0 Rachel Helme I and THEY poetic voices in learning to listen to a student labelled as low attaining in mathematics ABSTRACT 2 Kate C. O'Brien Fibre artists and outsider algorithms: rethinking ethnomathematics through contemporary craft ABSTRACT 8 Jennifer L. Ruef , Michelle M. Jacob Fractional humans: how decolonizing the learning of mathematics can heal ABSTRACT 14 Oyemolade Osibodu Communication: Necessitating teacher learning in teaching mathematics for social justice to counter anti-Black racism18 David Pimm Communication: Twenty years on: revisiting David Wheeler20 Nathalie Sinclair , Francesca Ferrara Experiencing number in a digital multitouch environment ABSTRACT 22 Gemma Carotenuto , Maria Mellone , Marina Spadea Moving in early geometry education ABSTRACT 30 Ioannis Rizos , Tasos Patronis , Athina Papadopoulou Communication: Difficulties in basic arithmetic and geometry as related to school algebra and the current effect of 'demathematization'37 Piera Biccard Communication: Productive struggle in mathematics39 Su Liang Communication: Equivalence and substitution: tools for teaching meaningful mathematics41 Carmit Benbenishty Communication: Linear algebra students' conceptions: sets that are closed under operations43 From the archives Communication: From the archives45 Igor' Kontorovich , Rina Zazkis , John Mason From one kind of numbers to another: the metaphors of expansion and transition ABSTRACT 47 Circe Mary Silva da Silva The originality of Lev Tolstoy's arithmetic ABSTRACT 50 - Contributors56
