Development of higher mathematical thinking of senior high school students through training of open-ended problems assisted by the teacher's scaffolding

Abstract

This article is based on applied research that has started with preliminary research in 2019. The objectives: Obtain the results of the analysis of Open-ended Problems assisted by the teacher's scaffolding, which can be used to develop Higher Mathematical Thinking for Senior High School students. The methods, qualitative approaches. The research subjects took 6 students of SMAN 1 Ungaran, two students from the clever, medium, and lack groups. Data analysis includes data reduction, data presentation, data interpretation, and concluding. Data obtained from test results, intensive interviews, and triangulation. The results: (1) Senior High school teachers found identification of scaffolding level to develop of Higher mathematical thinking, (2) through the practice of open-ended Problems with the help of scaffolding by the teacher, it was successfully used as a means of developing Higher Mathematical Thinking for Senior High School students. The conclusions: (1) The practice of Open-ended Problems assisted by the teacher's scaffolding succeeded in developing Higher Mathematical Thinking for senior high school students. (2) Teachers need to be at a scaffolding level to develop Higher Mathematical Thinking, depending on intelligence level. The more intelligent, the less its guidance.