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This study aims to determine the effect of the use of cycle fractions on the addition of simple fractions in fourth grade students at SDN 02 Tilamuta. This type of quantitative research is descriptive. One group prettestposttest research design. This study uses data collection techniques through tests and documentation. The sample of this research is the fourth grade students as many as 22 people. The results showed that the effect of the use of the circular board teaching aid had a significant effect on Mathematics Learning Outcomes. This result can be seen from the average pretest score in learning is 46.81 and after learning the posttest average value becomes 78.63. This is reinforced by the results of hypothesis testing with posttest t-test at level a = 0.05, obtained t count 11.701 with t table is 2.30 or (t count 11.701 t table 2.05). Thus, it is concluded that there is an effect of using the cycle fraction on the addition of fractions in class IV SDN 02 Tilamuta, Boalemo Regency.
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