Subjects: “...development research, pisa, quantity content, mathematical literacy...”
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Subjects: “...timss, design research, problem solving, geometry, volume cube and rectangular prism...”
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Subjects: “...lesson plan, problem based learning (pbl), social arithmetic, development research...”
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“... Qodratullah Langkan. Method of this research is design research, Hypothetical Learning Trajectory (HLT...”
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“... research and method used in two stages, that are preliminary study (analysis and model development stage...”
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“.... The method used is research development or Development Reserch through three stages: preliminary (preparatory...”
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“... Indralaya. Researcher used the methods: Design research ( Gravemaije, 2009) designed in 3 stages, i.e. Front...”
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“... of the students' ability of blogs to make math learning media. Research methods used are design research...”
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“...<p><em>This research purposes to result valid and practical opportunity learning equipment...”
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