Fajar Arwadi, Bustang, Ratu Ilma Indra Putriz, Somakim, Djadir
The present research which is the continuance of the two-dimensional problem activities, addresses how the designed instructional learning support students in solving three-dimensional multiplication problems as well as grasping the concept of multiplication. Design research, which fits to answer the research question was chosen to reach those set objectives. Specifically, a hypothetical learning trajectory (HLT) was set consisting of learning goals, student activities, and the conjecture of their thinking and learning by applying the principle of Realistic Mathematics Education. Reflecting from the activities, the findings suggest that by creating hands-on activity, the students are able to make all different possible combinations of each kind of object. The use of tree-diagram model in the two-dimensional problems suggests the children use such kind of model. © Published under licence by IOP Publishing Ltd.
Department of Mathematics, Universitas Negeri Makassar, Makassar, 90222, Indonesia
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