The Effect of Multimedia-Assisted RADEC Learning Model on Critical Thinking Skills on Human Circulatory System Materials of High School Students
Keywords:
Critical Thinking, RADEC, Circulatory SystemAbstract
This study aims to determine the influence of the multimedia-assisted RADEC learning model on critical thinking skills on the circulatory system material of SMA Negeri 1 Binjai, Langkat Regency. This type of research is a quasi-experiment and the experiment in this study uses the population, namely all students of Kelas XI SMA Negeri 1 Binjai, Langkat Regency. The sample of this study is 68 students consisting of two classes, namely experimental class XI IPA2 and control class IPA3 that are randomly taken. The test instrument used to determine critical thinking skills is in the form of multiple questions as many as 20 questions. The results showed that the multimedia-assisted RADEC learning model had a positive influence on students critical thinking skills compared to the direct learning model. The results of the critical thinking ability score of the experimental class using the RADEC learning model obtained an average score of 81.18 while in the control class using the direct learning model, the average score of 72.35 was obtained. From the results of the hypothesis test, it was obtained that the significance value of critical thinking skills of the experimental class postes with the RADEC learning model and the control class postes with the direct learning model was 0.001. This result shows that the postes data 0.001 < 0.05 which has the meaning of H0 rejected and Ha accepted. So it can be concluded that there is an effect of the use of the multimedia-assisted RADEC learning model on students critical thinking skills on the blood circulation system material of SMA Negeri 1 Binjai, Langkat Regency.
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