This study aimed to determine the effect of using an aluminum pipe modification tool on students' javelin-throwing abilities. This research design uses  Pretest-Posttest Control Group Design. The sampling technique used in this study was purposive. The sample in the study was students of class IPA 4 who were divided into two groups (experimental group and control group), with 18 students in each group. The experimental group was given treatment using aluminum pipe modification tools, while the control group was not assigned treatment and aluminum pipe modification tools. Data collection techniques used include a pre-test and post-test. It was analyzed using an independent t-test. From the results of the t-test calculation, the results of Sig. of 0.000 where if Sig. <0.05, then there is a significant difference. Then the results of the t-test obtained tcount of 4.127 where if tcount 4.127 > ttable 2.021 (df 34), then it is declared a significant difference. In conclusion, the use of a modified aluminum pipe has an increasing and significant effect on the javelin-throwing ability of the students of SMA Negeri 1 Setu, Bekasi Regency. Keywords: Ability, Aluminum Pipe Modification Tool, Javelin Throw.

ABSTRACT    This study aims to determine the effect of audiovisual media on improving the ability to perform basic smash techniques in badminton. This study uses a one-group pretest-posttest design. This research implements audiovisual media in learning basic smash techniques. The subjects used in the study were Vocational High School students with 18 people consisting of 7 students and 11 students with an average age of 16 years. Data collection techniques used pre-test together with post-test, analyzed using t-test. This study indicates an increase in using audiovisual media, namely the with the Shapiro-Wilk test > 0.05; it can be interpreted that the data is usually distributed and the results of the calculation of the paired sample test obtained sig. (2-tailed) of 0.00 where if sig. (2-tailed) <0.05, it is stated that there is a significant effect. The conclusion is that audiovisual media is very influential in improving the ability to perform basic smash techniques in badminton.  Keywords: Audio Visual Media, Smash Basic Techniques. Vocational High School Students