This study aims to describe the process of developing an electronic module for learning to write short stories based on project-based learning that is valid, practical, and effective, which class XI high school students use. This research and development (R&D) use a 4D development model, which includes definition, design, development, and deployment. The results of this study indicate that the electronic module improves student learning outcomes. It is evidenced by the results of the electronic module's validity, practicality, and effectiveness. The validity of the electronic module by experts is 95.1%, so the electronic module is categorized as very valid. The practicality of the electronic module by the teacher is 93.05% in the very practical category, and the practicality by students is 85.8% in the very practical category. Student learning activities are 97.5% in the very active category. The effectiveness of the electronic module is based on the results of the student knowledge test, the average score obtained is 87 with an A predicate. Based on the student skills test results, the average score obtained is 87 with an A predicate (very effective).

The purpose of this study is to describe the effectiveness of sentences in the student news text in terms of five things. First, the effectiveness of sentences in terms of clarity of structure, there are 82 (16.56%) errors. The ineffectiveness of the sentence is in the active/ passive structure (14 errors), the subject is not an explanation (33 errors), the predicate is not lost (15 errors), the description is not in the form of the subject (10 errors), and the subject is not lost (10 errors). Second, the effectiveness of the sentence in terms of the logical meaning there are 58 (11.72%) errors. The ineffectiveness of the sentence lies in the logical relationship S and P (49 errors) and the logical relationship of details or parallel meaning (9 errors). Third, the effectiveness of sentences in terms of word savings there were 40 (8.08%) errors. The ineffectiveness of the sentence is on one subject from the same subject (27 errors) and one word from several synonymous words (13 errors). Fourth, the effectiveness of sentences in terms of word stiffness there are 34 (6.87%) errors. Fifth, the effectiveness of sentences in terms of spelling accuracy is 281 (56.77%). Ineffectiveness of the sentence lies in the use of capital letters (102 errors), prepositions (33 errors), punctuation (85 errors), and writing words (61 errors). Based on these results it can be concluded that the sentences in the explanatory text of eighth grade students of SMP Negeri 16 Padang are not effective. This is evidenced from the 210 sentences studied, there were 22 (10.48%) effective sentences and 188 (89.52%) ineffective sentences with 495 errorsKata Kunci: Keefektifan Kalimat, Teks Berita