The Effects of Learning Management Using the Bar Model on the Ability to Solve Mathematical Problems in the First Secondary School Students
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Abstract
The research article aimed at investigating the ability to solve mathematical problems after the use of bar model for the first secondary school students. The study employed quasi-experimental research. The sample group consisted of nine students from the first secondary school who were in the second semester of the academic year 2021. Cluster sampling was used to select the sample group, with the school serving as the sampling unit. Research instruments included: 1) 8 learning management plans based on linear equations in one variable using the bar model; and 2) an assessment form with 14 objective and 3 open-ended questions totaling 20 points to test problem-solving skills. The results of the mathematical problem-solving skills test were calculated using basic statistics, namely mean and percentage. The percentage of the mean score was then compared to the criteria of 70 percent.
From the study, the results found that the ability of students to solve mathematical problems on linear equations in one variable after the use of bar model have a mean score that meets the criteria of 70 percent. 88.9% of students are able to solve problems correctly using the bar model.
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