Y. Adhitya, S. Prabawanto
Pseudo construction thinking occurs when students assume that true/false belief is actually not totally true/false. The study aimed to describe the characteristics and causes of students' pseudo thinking in solving mathematical reasoning about number operation based on mindset. This research was descriptive qualitative research. The subjects of this study were 30 Junior High School students in Kebumen. Data collection techniques used mathematical reasoning test, questionnaire mindset, and interview. The mathematical reasoning test was constructed with making a conjecture as indicators. Questionnaire of mindset adapted from Mindset Work. Interviews were used to support the validity of data related to subjects indicated to have pseudo. Based on the result of the research: (1) there are 20 students with growth mindset and 10 students with fixed mindset; (2) fixed mindset students do false pseudo, 3) growth mindset students do both types of pseudo and 4) the cause of these pseudo are conceptual and procedural error. © 2018 Published under licence by IOP Publishing Ltd.
Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia
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