PENGEMBANGAN INSTRUMEN PENDUKUNG MEDIA PEMBELAJARAN PADA MATERI SISTEM PERSAMAAN LINEAR TIGA VARIABEL KELAS X MAN 1 MOJOKERTO

The aim of this study described the effectiveness of instructional media that produces valid, effective, and practical media. The development of communication and technology requires teachers to be more active and creative in carrying out classroom learning. Teachers can develop learning media that can improve student learning outcomes. The sample of this research trial was the students of class X at MAN 1 Mojokerto. This study uses a 4-D research method which is shortened to 3-D. Data collection techniques used include interviews with mathematics teachers, pretest and posttest questions. The instruments used in this study include guidelines for using media, teaching materials, validation sheets, student response questionnaires and tests. The results of this study indicate that the average validation guide for the use of media, and teaching materials is 95.15%, besides that the validator also provides an assessment on the response questionnaire sheet of 97.5%. This indicates that the media guidelines, teaching materials, and response questionnaires are very valid. The average result of the N-Gain value of students is 0.96, based on the N-Gain criteria scale shows high criteria so that the media is said to be effective, and the results of the calculation of students' questionnaire responses show that each statement point is greater by 70% and the students can be said to be good in ability operate the gadget