This study aims to produce a valid and effective learning tool that is impactful towards students’ mathematical problem solving ability by using number heads together type cooperative learning model. The study developed both lesson plan ((known as RPP) and students' worksheets (known as LKPD) by using the Plomp development model. The research focuses on testing the effectiveness of the learning tool. The instruments used in this study are validation sheets and problem-solving skills tests. The result of the survey shows that RPP and LKPD were valid and effective.
The tactical and technical approach model is an approach model that is often used in physical education, especially in game sports, one of which is basketball. This study aims to determine the different effects of tactical and technical learning models on students' understanding and skills in basketball. The method and design of this study used an experimental method with pre-test and post-test design groups. The research sample is composed of high school students, with a total of 48 students. 12 students using a technical approach and 12 tactical students The instrument uses GPAI (Games Performance Instrument Analysis). The results obtained (1) test the similarity of the average of the two skills obtained. 000 for technical and 0.000 for tactical, it can be concluded that the two models have significant differences in basketball playing skills. (2) Then the two models have different average values; the playing skills score of the tactical approach model is 0.67 and the technical approach model is 0.55. The difference between the two approach models shows that the tactical approach model has a significantly greater effect than the technical approach model.
The background of this research is motivated regarding children's speaking which is still low. The number of children experience the difficulty in speaking due to the pronunciation of the letters and words which is unclear. The purpose of this study is to know the children's speaking ability, before, in process, and after using the pop-up book media in every cycle in group A at RA Widuri Asy-Syifa Cinanjung, Tanjungsari, Sumedang. The approach uses in this study is mixed-method design which is combining the quantitative and qualitative approach. The method that uses by the researcher is Classroom Action Research. This research consisted of two cycles and each cycle consisted of planning, implementing, observing and reflecting. The data collection technique of this research using observation, documentation and performance. The data analysis of this research using descriptive and statistics. The result of the study showed that children's speaking ability before using pop-up book media obtained an average value of 56 with less criteria. The process of implementing pop-up book media showed an increase, the teacher activity in cycle I is 75% and cycle II is 90%. The activity of the first cycle of children is 68% and the second cycle is 88%. Therefore, the children's speaking ability after implementing pop-up book media has increased, cycle I the average value is 67 and cycle II the average value is 85. Thus, the hypothesis proposed is accepted, therefore using pop-up book media can improve children's speaking ability
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