Items where Author is "Kusumah, Yaya Sukjaya"
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Fitriyani, Harina and Kusumah, Yaya Sukjaya and Turmudi, Turmudi (2021) Spatial Reasoning: A Survey on the 8th Grader Students' Gain in Online Learning. International Journal on Emerging Mathematics Education, 5 (1). pp. 51-60. ISSN 2549-4996