The objective of this study is to examine how student teachers use proportional number line in teaching multiplication and division of fractions in context of lesson study and open approach. Teaching ...
Plenty of research has shown that many students struggle with learning of rational numbers, particularly of fractions (e.g., Behr et al., 1983; Siegler et al., 2011; Lortie-Forgues et al., 2015). Two ...
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