Items where Author is "Sumarto, Sylvana N."
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Sumarto, Sylvana N. and Zulkardi, Zulkardi and Darmawijoyo, Darmawijoyo and van Galen, Frans (2013) Design Research: Ratio Table and Money Context as Means to Support the Development of Student?s Proportional Reasoning. In: Zulkardi(Eds). The First South East Asia Design/ Development Research (SEA-DR) International Conference, 22-23 April 2013, Palembang, Indonesia.