Critical Thinking Process of the Coffee Plantation Area Students in Solving the Problems

This research aims to describe the process of critical thinking of junior high school students around the coffee plantation of Jember regency, East Java, Indonesia in solving math-science problems with the coffee theme. The research participants were 100 junior high school students who had been classified into 3 academic abilities, namely high, medium, and low. The standards of critical thinking used were clarity, precision, accuracy, relevance, consistency, logical correctness, completeness, and fairness. The methods used to collect data were test and interview. There were 30 high-ability students (30%), 44 medium-ability students (44%), and 26 low-ability students (26%). The results for 100 students of this research were (1) students tended to be able to understand the meaning of the problem well by writing down something that was known and was asked by using their own language, so the clarity standard could be met although it was not maximal, (2) students tended not to write problem solving hypothesis, but the problem-solving steps could be explicitly explained when the students were interviewed, so that the precision as critical thinking standard was met even though it was not maximized, (3) students tended to be able to input the information on the problem, but they could not connect the information with the problem solving process, so the critical thinking standard of accuracy and logical correctness had not developed optimally, (4) students tended not to write things related to problem solving and could not find other alternative solutions, so students did not meet the critical thinking standards of relevance, consistency, and completeness, and (5) students tended to write conclusions according to problem solving, so that the fairness standard was met.