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Abstract

This study aims to analyze the validity, practicality and effectifity of the development of learning tools through the test of control class, test of treatment class and the effectivity test in order to produce biology learning tools based PBL (problem based learning) that valid, practical and effective to improve performance in prepared a report to 11th grade of high school students. The development of the learning tools refers to a Borg and Gall development model. Data was collected using observation sheets, validation sheet, questionnaire, and test. Methods of data analysis done by quantitative descriptive analysis of the needs analysis, the validity and practicality of the learning tools. The effectifity of the learning is done by pretest posttest. Effectifity of learning tools analyzed by paired t-test. Results showed that the learning tools otherwise (1) very valid with a percentage of 98.91%, (2) practical with a percentage of 84,68%, and (3) effective with Tvalue amounting to 3,51 (Tvalue> Ttable) at significance level of 5%. Based on the results of this study concluded that the PBL Based Learning has met the criteria perfectly valid, prractical, and effective way to improve performance in preparing the reports of students through learning biology in high school, so it can be used in a broader scope.

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