Instructional multimedia with local context oriented to numeracy skills: practicality and effectiveness

The aim of this research is to develop instructional multimedia with local context of Lombok Island for junior high school students. The development of instructional multimedia is oriented towards numeracy skills on the probability topic. This research is development research based on the design research model by Plomp which consists of 3 phases, namely Preliminary Research, Development or Prototyping, and Assessment. The subjects in this research were grade IX junior high school students consisting of 24 students. The data were collected using practicality questionnaire to determine the practicality of multimedia and numeracy skills test to determine the effectiveness of multimedia. The results showed that instructional multimedia met the practical and effective criteria. The results of the teacher's assessment showed a total score is 32 in practical classification. Then 83% of students gave an assessment of being in the very practical classification and 17% were in the practical classification. The results of the effectiveness of the numeracy skills test showed that 79% of students achieved the Minimum Completeness Criteria score. Therefore, instructional multimedia is practical and effective for mathematics learning oriented to students' mathematical numeracy skills.