The purpose of this study was to analyze the effect of the CTL model on science learning outcomes in fourth-grade students at MI Al-Fatah Singakawang. This research was conducted at MI Al-Fatah Singkawang. This quantitative study employed a quasi-experimental method and a posttest-only control group design. The population was all fourth-grade students at MI Al-Fatah Singkawang in the 2025/2026 academic year, totaling 60 students, consisting of 30 students from grade IV and 30 from grade IV. The sample was selected using probability sampling. Data collection involved a multiple-choice test containing 20 questions. Data analysis employed the t-test and the Effect Size test. The results showed a difference in science learning outcomes with the CTL model compared to the conventional method in fourth-grade students at MI Al-Fatah Singkawang. The two-sample t-test showed that t-test > t-table (6.9443 > 2.0032). Therefore, Ha was accepted and Ho was rejected. The CTL model has a significant effect on the science learning outcomes of fourth grade students of MI Al-Fatah Singkawang in the experimental class who received the CTL model treatment with the effect size test results of 1.85 high criteria.
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