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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
Samsudin, Achmad; Cahyani, Paggi Bias; Purwanto; Rusdiana, Dadi; Efendi, Ridwan; Aminudin, Adam Hadiana; Costu, Bayram – Cypriot Journal of Educational Sciences, 2021
This research aims to the development of a Multitier Open-ended Work and Energy Instrument (MOWEI) using Rasch analysis and identifies students' misconceptions. This research method uses the 4D model (Defining, Designing, Developing, and Disseminating). The research participants involved were 30 Javanese students from XI class (12 male students…
Descriptors: Misconceptions, Foreign Countries, Measures (Individuals), Test Validity
Purwanto; Hidayah, Niswatul; Wagistina, Satti – International Journal of Educational Methodology, 2023
Learning geography in Indonesia philosophically aims to develop spatial literacy. Students must improve spatial literacy to form reasoning skills and apply spatial concepts in real life. Applying Gersmehl's spatial learning can improve students' spatial literacy through syntax arranged based on spatial aspects. The use of google earth helps…
Descriptors: Spatial Ability, Natural Disasters, Geography Instruction, Teaching Methods
