The Utilization of the Deutsche Welle Learning Application in Teaching German Vocabulary

This study aims to determine (1) the differences in German vocabulary mastery between classes taught using the Deutsche Welle application and conventional methods and (2) the effectiveness of the use of the Deutsche Welle application in increasing German vocabulary mastery. This research uses a quasi-experiment with pre-test post-test control group design. The population was Grade X students of SMA Islam Al Azhar 9 Yogyakarta. The samples were Grade X Science 3 (experimental) and X Science 2 (control), determined by a simple random sampling technique. The validity of the instrument was tested with content validity, construct validity, and item validity using the Pearson Product Moment calculation. Reliability was calculated using the KR-20 formula, and the research data were analyzed using the t-test. The results showed that the t-count value of 3.049 was greater than the t-table of 2.009 at the significance level =0.05 and db=49. The post-test mean value for the experimental class was 75.23, which was higher than the post-test mean for the control class, which was 69.23. The effectiveness weight was 9.45

Construct validity · German · Linguistics · Mathematics education · Population · Psychometrics · Statistics · Vocabulary · Educational Methods and Media Use · English Language Learning and Teaching · Mathematics · Medicine · Psychology · Technology-Enhanced Education Studies