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Source:
Educational Studies in Mathematics. Nov2012, Vol. 81 Issue 3, p325-345. 21p. 2 Charts.
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Source:
European Journal of Pure & Applied Mathematics. 2012, Vol. 5 Issue 4, p511-539. 29p.
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Australian Primary Mathematics Classroom. Oct2012, Vol. 17 Issue 4, p13-21. 9p. 3 Diagrams, 2 Charts.
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Australian Primary Mathematics Classroom. Oct2012, Vol. 17 Issue 4, p8-12. 5p. 2 Diagrams, 1 Chart.
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Source:
Education. Fall2012, Vol. 133 Issue 1, p85-96. 12p.
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Educational Studies in Mathematics. Jul2012, Vol. 80 Issue 3, p351-367. 17p. 2 Diagrams, 3 Charts, 1 Graph.
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Source:
PNA. Jun2012, Vol. 6 Issue 4, p117-133. 17p. 4 Illustrations.
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Open Learning. Jun2012, Vol. 27 Issue 2, p149-167. 19p. 4 Charts.
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Source:
Electronic Journal of Mathematics & Technology. Jun2012, Vol. 6 Issue 2, p141-158. 18p. 6 Diagrams, 3 Charts.
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Source:
Educational Studies in Mathematics. Feb2012, Vol. 79 Issue 2, p175-191. 17p. 5 Charts.
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