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Download full textHamdani, Deni; Purwanto; Sukoriyanto; Anwar, Lathiful – Journal on Mathematics Education, 2023
Failure to deduce false suppositions in proof by contradiction is still considered "more difficult" than proving the conditional ?? to ?? in proof by contraposition. This study aims to identify the types of proof construction failures based on the action steps of proof by contradiction, then offer a framework of construction failure…
Descriptors: Validity, Mathematical Logic, Mathematics Instruction, Guidelines
Anwar, Lathiful; Mali, Angeliki; Goedhart, Martin J. – EURASIA Journal of Mathematics, Science and Technology Education, 2021
This study aims to investigate the effects of the use of multiple geometry proof formats on Indonesian students' reading comprehension of geometry proof (RCGP). Four classes of prospective secondary mathematics teachers (N=125), aged 18 to 19 years, participated in this quasi-experimental study. While the experimental group was instructed in three…
Descriptors: Reading Comprehension, Preservice Teachers, Mathematics Teachers, Mathematics Instruction
Netti, Syukma; Nusantara, Toto; Subanji; Abadyo; Anwar, Lathiful – International Education Studies, 2016
The purpose of this article is to describe the process of a proof construction. It is more specific on the failure of the process. Piaget's frameworks, assimilation and accommodation, were used to analyze it. Method of this research was qualitative method. Data were collected by asking five students working on problems of proof using think aloud…
Descriptors: Foreign Countries, Validity, Protocol Analysis, Mathematical Logic
