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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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Edo, Sri Imelda; Hartono, Yusuf; Putri, Ratu Ilma Indra – Indonesian Mathematical Society Journal on Mathematics Education, 2013
The chart of Indonesian student of mathematical ability development in Program for International Student Assessment (PISA) event during the last 4 periods shows an unstable movement. PISA aims to examine the ability of children aged 15 years in reading literacy, mathematics literacy, and science literacy. The concept of mathematical literacy is…
Descriptors: Foreign Countries, Secondary School Students, Secondary School Mathematics, Mathematics Instruction
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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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Yuberta, Kurnia Rahmi; Zulkardi; Hartono, Yusuf; van Galen, Frans – Indonesian Mathematical Society Journal on Mathematics Education, 2011
Many researchers found that students have difficulties in understanding area measurement. Students mostly focus on applying formula to find the area of certain shapes without knowing what the area is and why the formula works. It is important for the students to know what attribute being measured and to construct the unit for area measurement.…
Descriptors: Foreign Countries, Measurement, Geometric Concepts, Mathematics Instruction
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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