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Lestari, Umi Puji; Putri, Ratu Ilma Indra; Hartono, Yusuf – Indonesian Mathematical Society Journal on Mathematics Education, 2015
This study aims to investigate how set model can help students' understanding of addition of integers in fourth grade. The study has been carried out to 23 students and a teacher of IVC SD Iba Palembang in January 2015. This study is a design research that also promotes PMRI as the underlying design context and activity. Results showed that the…
Descriptors: Foreign Countries, Elementary School Mathematics, Grade 4, Mathematical Concepts
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Jaelani, Anton; Putri, Ratu Ilma Indra; Hartono, Yusuf – Indonesian Mathematical Society Journal on Mathematics Education, 2013
Understanding of measuring time has difficulty for children because it is intangible. Standard units often used directly by teacher for learning time measurement. Many researches involved games in designing learning material to facilitate fun and meaningful learning for children. For this reason, learning of time measurement that connects with…
Descriptors: Time, Educational Games, Elementary School Students, Grade 3
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Shanty, Nenden Octavarulia; Hartono, Yusuf; Putri, Ratu Ilma Indra; de Haan, Dede – Indonesian Mathematical Society Journal on Mathematics Education, 2011
This study aimed at investigating the progress of students' learning on multiplication fractions with natural numbers through the five activity levels based on Realistic Mathematics Education (RME) approach proposed by Streefland. Design research was chosen to achieve this research goal. In design research, the Hypothetical Learning Trajectory…
Descriptors: Foreign Countries, Grade 5, Elementary School Mathematics, Multiplication
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Helsa, Yullys; Hartono, Yusuf – Indonesian Mathematical Society Journal on Mathematics Education, 2011
The innovation of education is an important point of Pendidikan Matematika Realistik Indonesia (PMRI), one of them through traditional dance as a context of national cultural. Dance that collaborated with concept of mathematics, it is called Math Traditional Dance. This research aims to produce learning line (specific) the material of reflection…
Descriptors: Foreign Countries, Teaching Methods, Grade 4, Elementary School Students
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Pramudiani, Puri; Zulkardi; Hartono, Yusuf; van Amerom, Barbara – Indonesian Mathematical Society Journal on Mathematics Education, 2011
Learning about decimals is an important part in mathematics. However at the same time, decimals are known as the abstract numbers for students. Mostly in Indonesia, decimal is taught only as another notation for fractions or percentages. There are no meaningful references for them such as the use of concrete situations. This study aimed at…
Descriptors: Foreign Countries, Arithmetic, Mathematics Instruction, Teaching Methods