This study aims to find out about the influence of the vocabulary mastery and reading comprehension towards students’ mathematicals performance in PISA, either directly or indirectly. This research uses survey method with a quantitative approach and path analysis as a research design. The respondents are 70 students of Junior High School in Jakarta. Data collection is done through research instrument in the form of tasks about vocabulary and reading comprehension, while the mathematical questions about Space and Shape are taken from PISA 2015. The results of the analysis shows that there are: direct influence of vocabulary mastery towards students’ performance in mastering mathematical problems in PISA; direct influence of reading comprehension towards students’ performance in mastering mathematical problems in PISA; direct influence of vocabulary mastery towards reading comprehension; direct influence of vocabulary mastery towards students’ performance in mastering PISA’ mathematical problems through reading comprehension. It can be concluded that in order to enhance student’ mathematical competence in PISA, we also have to improve their competence in vocabulary mastery and reading comprehension through improvement of teacher’s competence and infrastructures at school such as language laboratory. We hope that this study can be beneficial for further research to improve mathematical competences of the students.
This research aims at enhancing learning developments in Mathematics through online learning systems using multiple cycles. We conducted a classroom action research as a method with the jigsaw type within the cooperative learning model. The research samples were 36 students in the fourth semester. The finding showed that there was a considerable increase in the learning outcomes from the first cycle to the second cycle. In the third cycle, all students reached the minimum submission criteria prescribed by the faculty with a value of 70. It can be concluded that the cooperative learning model of Jigsaw type with an additional assignment of homework can maximize the results of mathematics learning in Indonesian universities.
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