<![CDATA[The purpose of this study was to determine the effect of the Open-Ended learning model on understanding mathematical concepts by controlling students' numerical talents. This research was conducted in class X SMA Negeri 7 Denpasar with quasi-experimental methods with the design of The Non Equivalent Posttest Only Control Group Design, involving a sample of 72 students taken by simple random sampling technique. The independent variable in this study is the learning approach which is divided into two levels of factors, namely the Open-Ended learning model that is imposed on the experimental group and the conventional learning model that is imposed on the control group. As the dependent variable in this research is understanding mathematical concepts. Numerical talent is a control variable (covariable). The research instrument was a test, namely a test of understanding mathematical concepts and numerical aptitude tests. Data analysis used t-test and one-way Anakova. The results showed that: (1) there is an influence of understanding mathematical concepts between students who take the Open-Ended learning model and those who follow conventional learning models, 2) there is an influence of understanding of mathematical concepts between students who take the Open-Ended learning model and those who follow the learning model conventional after numerical talent control. Understanding of mathematical concepts achieved by controlling students' numerical talents, proves that Open-Ended learning models can influence understanding of mathematical concepts themselves.]]>
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