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Download full textWindria, Hening; Zulkardi, Zulkardi; Hartono, Yusuf – Elementary School Forum (Mimbar Sekolah Dasar), 2020
Mixed numbers and fraction in general have been a problem for students not only in understanding the concept of itself, but also in understanding the operation of it, such as addition. Thus, supporting students in learning addition of mixed numbers is needed. The aim of this study is to develop a local instructional theory and materials related to…
Descriptors: Educational Research, Grade 4, Elementary School Students, Addition
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
