Penelitian ini bertujuan untuk meneliti perbedaan peningkatan kemampuan berpikir kreatif matematis siswa dengan model pembelajaran open ended. Penelitian ini menggunakan metode kuasi eksperimen dengan desain pretest-posttest control group. Subjek Penelitian ini adalah siswa kelas VII di salah satu MTs kota Bandar Lampung sebanyak 60 siswa. Dalam penelitian ini terdapat dua kelas, yaitu kelas eksperimen sebanyak 30 siswa yang memperoleh pembelajaran dengan model pembelajaran open ended dan kelas kontrol sebnyak 30 siswa memperoleh pembelajaran dengan pendekatan saintifik. Instrumen penelitian ini menggunakan tes kemampuan berpikir kreatif matematis siswa dengan mengacu padaindikator kemampuan berpikir kreatif matematis. Hasil penelitian ini menunjukan secara keseluruhan peningkatan kemampuan berpikir kreatif matematis siswa yang memperoleh pembelajaran dengan model pembelajaran open ended tidak lebih baik dari siswa yang memperoleh pembelajaran dengan pendekatan saintifik.

This research aimed to find out the differences of the improvement of students mathematical creative thingking skill using open ended. This research used quasi experimental method whith pretest-posttest control group. The subjects of this research were 60 students at class VII in one of the MTs in Bandar Lampung city. There are two classess in this study namely the experimental class consisted of 30 students getting open ended learning models and the second control class consisted of student getting scientific approach. The instrument of this study used student creative thingking skill test, based on mathematical creative thingking indicator. The result of this study showed all of improvement of mathematical creative thingking students ability getting open ended learning model was not better then students getting scientific approach.

This study aims to determine the improvement of students' mathematical communication skills in online learning by using instructional video media. The study used a quasi-experimental method with a pretest-posttest control group design. The research subjects were students of class VIII in a private Junior High School in Bandar Lampung City. There are two classes in this study, namely the experimental class consisted of 33 students and the control class consisted of 33 students. The experimental class received online learning using instructional video media, while the control class used the method without giving intructional videos. The research instrument used a mathematical communication ability test. The results showed that the inprovement in mathematical communication skills in the experimental class was better than the control class

This study aims to determine the improvement of students' mathematical understanding skills using instructional video media. This research was conducted at one SMP Negeri 3 Tanjung Bintang, South Lampung 2021/2022. The subjects in this study were students of class VIII consisting of an experimental class and a control class, each of which was opened by 30 students. The samples were taken in this study using a purposive sampling technique. Data collection in the form of pretest and posttest. Pretest and posttest were used to measure mathematical understanding ability. The results showed an increase in the mathematical understanding of the experimental class 81,187 and the control class 71,349 t test resulted in a value of sig (2-tailed ) = 0.000 < 0.05 then H0 was rejected so that the average score for increasing the understanding of mathematical concepts in the experimental class was better than the average score. control class improvement.