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Asia-Pacific Forum on Science Learning and Teaching, Volume 18, Issue 2, Article 10 (Dec., 2017)
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This research was conducted in the odd semester 2016/2017 on the Biology education department in STKIP PGRI Sumatera Barat. The type of research is developed using 4-D model and the data analysis technique is a descriptive analysis that describes the results of validity, practicality, and effectiveness of the student worksheet.
The stages development of 4-D models are defined, design, and development. In this research is limited until the development stage of student worksheet based on mastery learning in crossing- over field concept. The validity test is performed by two validators are includes three validation aspects. The data is then processed to obtain the average score of validity. Practicality test can be seen in several aspects, such as ease of use, the time required in the implementation, the attractiveness of the device to the interests of students, ease in interpreting, and have the same equivalent. In the effectiveness test carried out, a limited effectiveness test was conducted in a class of 29 students. Effectiveness testing is done to know the effectiveness of student worksheet in increasing student activity and a result of learning. Aspects of activity are observed by the observer, ie doing the exercises, working in groups and presenting group results. Learning outcomes are obtained from the final exam score after attending the lecture. Processing the value of learning outcomes is tailored to the standard assessment used by STKIP PGRI Sumatera Barat to determine the graduation of students.
