M. Muzaini, D. Juniati, T.Y.E. Siswono
This research was qualitative that aims to described the quantitative reasoning and students' generalization ability in direct proportion. This research involved 35 grade VIII junior high schools; one of them with moderate math skills was chosen as the main subject. The data collected through the test, assignment, and task-based interviews. The results of this research showed that a generalization that was built by the subject begins with forming a relationship between two or more quantities by establishing ratio of the quantity which appears linking the two initial quantity, doing repetition to find the elements of common ground and further developed the pattern or relationship into a more general form of structure. The quantitative reasoning which belonged to the subject greatly affects the generalizations made. The results of this research are important as an input material for teachers, to develop a strong generalization in General, and then the student must construct the ratio of the quantity that appears with the linking between the quantities. In order to support the students' ability to perform a generalizing correctly. © Published under licence by IOP Publishing Ltd.
Universitas Cokroaminoto Palopo, Jl. Latammacelling No. 19, Sulawesi Selatan, Indonesia; Universitas Negeri Surabaya, Jl. Ketintang, Kota Surabaya, 60231, Indonesia
