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All Journal Journal of Education and Teaching Learning
David Rimson Sinabutar
Universitas Katolik Santo Thomas
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The Effect of Wordwall-Assisted STAD Cooperative Learning Model to Improve Students' Problem-Solving Ability in Two-Variable Linear Equation Systems for Grade VIII Students at SMP St. Yoseph Medan David Rimson Sinabutar; Imelda; Israil Sitepu
Journal of Education and Teaching Learning Vol.4 No.2 October (2026)
Publisher : PT MEDIA JURNAL DAN PENDIDIKAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59211/mjpjetl.v4i2.446

Abstract

This study aims to determine the effect of the Student Teams Achievement Division (STAD) cooperative learning model assisted by Wordwall on the mathematical problem-solving abilities of eighth-grade students of St. Yoseph Catholic Private Junior High School Medan in the 2025/2026 Academic Year and the improvement of students' mathematical problem-solving abilities after the model is implemented. This study uses a quantitative approach with the Pre-Experimental Design method using the One Group Pretest-Posttest Design. The research sample consisted of 36 students. Data analysis used normality tests, Paired Sample t-Test, and N-Gain. The results showed that the average pretest score of 50.806 increased to 80.167 in the posttest. The results of the hypothesis test obtained tₕᵢₜᵤₙg = 53.303 and tₜₐᵦₑₗ = 2.030, so that H₀ was rejected and Hₐ was accepted. The N-Gain test results obtained an average of 0.611, categorized as moderate. Thus, it can be concluded that the Student Teams Achievement Division (STAD) cooperative learning model assisted by Wordwall has a significant effect and is able to improve students' mathematical problem-solving abilities.  
Co-Authors Imelda Imelda Israil Sitepu