<![CDATA[This research aims to analyze the effectiveness of the assignment of props to the ability to analyze and present data to students of SMA Negeri 9 Semarang .This research design uses pre-experimental with one group pretest posttest design. The research population is all students of class XI MIPA SMA Negeri 9 Semarang. Sampling techniques using purposive sampling i.e. class XI MIPA 5, XI MIPA 6 and XI MIPA 7 as experimental classes without control classes, pretest and posttest values are analyzed using N-gain tests and wilcoxon tests. The results showed an increase in class XI MIPA 5 with N-Gain 1.73 percentage of classical completion reached 80.00% (KKM ≥75), class XI MIPA 6 with n-gain 1.63 by 88.24% pass KKM and class XI MIPA 7 with ¬N-Gain 1.50 by 75.00% pass KKM. The wilcoxon test showed that there was a significant difference in students' analytical ability between before and after learning with the assignment of props in the experimental class with Ha received, namely Sig grades. 0.000 or <0.05. The results of the ability analysis presenting data to students throughout the experimental class are on high criteria. All data obtained can be used as a reference that the assignment of props is effective to improve the ability to analyze and present data to students]]>
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