Abstract
This study aims to: 1) to produce online learning tools based on realistic mathematics education (valid, practical, and effective) for 1st grade of MAN 1 Medan students; 2) to analyze the improvement of students' critical thinking ability after being taught by using online learning tools based on the realistic mathematics education for 1st grade of MAN 1 Medan; 3) to analyze the achievement of the adversity quotient of students after using online learning tools based on the realistic mathematics education in 1st grade of MAN 1 Medan. The subjects in this study were students 1st grade of MAN 1 Medan in the 2020/2021 school year. The results showed that: 1) Students' mathematical critical thinking ability using online learning tools based on the realistic mathematics education increased in terms of: The average posttest score of the first test was 73,07 increased to 87,60 and the N-Gain test I was 0,3 in the low category increased to 0,6 in the medium category in test II; 2) The ability of Adversity Quotient increased in terms of: the average ARP (Adversity Response Profile) results of the students in the first test of 125,43 increased to 154,13 in the second test, an increase of 28,70; 3) Learning tools developed based on online assisted realistic mathematics education have met the criteria of validity, practicality, and effectiveness. Keywords : Realistic Mathematics Education, Critical Thinking Ability, Adversity Quotient, Learning Tools DOI: 10.7176/JEP/12-2-11 Publication date: January 31 st 2021
Highlights
Puspitawedana (2017) states that education is an important factor in the progress of a nation
The improvement of students' critical thinking skills is due to the learning process using learning tools with a realistic online-assisted approach starting with contextual problems, so that students can use their previous experiences in understanding and solving math problems
Students' critical thinking skills using online-assisted realistic mathematics education-based learning tools increased, in terms of: (1) posttest classical completeness of trial I was 60% increased to 90% in trial II; and (2) N-Gain in the first trial of 0.3 in the low category, increasing to 0.6 in the medium category in the second trial
Summary
Puspitawedana (2017) states that education is an important factor in the progress of a nation. Mathematics is a science that underlies the development of modern technology and plays an important role in advancing human thinking. Husnidar and Siti (2017) stated that the reason for the importance of studying mathematics is because mathematics is an exact science that deals with reasoning and underlies human life. It requires mastery of mathematics as a science, but mastery of mathematical skills to be able to understand the world around you, be able to compete and succeed in life. The role of mathematics in education is closely related to the development of students' thinking abilities
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