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ERIC Number: EJ1177432
Record Type: Journal
Publication Date: 2015
Pages: 25
Abstractor: As Provided
ISSN: ISSN-0126-7663
Developing Student's Proportional Reasoning through Informal Way
Nasution, Andrea Arifsyah; Lukito, Agung
Journal of Science and Mathematics Education in Southeast Asia, v38 n1 p77-101 2015
In teaching proportion, the teachers usually give the students a formal formula, such as cross-multiplication, without providing them the meaning of proportionality. Thus, the students just apply it in order to solve proportional problems. However, it does not connote that they understand what proportionality means. In this paper, the authors attempt to explore how the informal proportional reasoning can be developed to a more formal level. The development of student's proportional reasoning is described in three levels since the representations of students' reasoning are different. In order to support them, several instructional activities were designed which were based on the heuristic of Realistic Mathematics Education (RME) within a learning trajectory. In this case, design research was chosen as an approach in investigating how the design works in the classroom. The result shows that the designed students' activities could help students learn about proportion and develop their proportional reasoning.
Southeast Asian Ministers of Education Organization Regional Centre for Education in Science and Mathematics (SEAMEO RECSAM). Jalan Sultan Azlan Shah, 11700 Gelugor, Penang, Malaysia. Tel: +011-60-4-658-3266; Fax: +011-60-4-657-2541; e-mail: director@recs;
Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Indonesia
Grant or Contract Numbers: N/A