The aims of this study is to explore the effects of three different forms multimedia teaching to critical thinking skills of students in the context of the science laboratory. The three forms of multimedia teaching materials are static images, videos, and animations, that used to teach science trial for 120 students from Elementary School teacher education university of Samudra, Langsa. The method used in this study is a quasi-experiment with pretest to posttest control group design. The pretest method was given to college students to determine their learning achievement before given the application multimedia to experiment science during learning process for the experimental group and also the implementation multimedia and learning feedback from a list of several questions. Descriptive statistics and ANOVA were also given to analyze data that have been collected. This study shows that videos and animations have bigger effects in critical thinking skills in the context of science laboratories rather than static images and observation performance. In addition, animation video in presentation can help students to understand the experiment and learning science easily.
This study aims to develop a valid and effective chemistry worksheet on project-based learning (PBL) in order to shape and train students’ habits of mind. This is research and development (R & D) study with reference to the ADDIE procedural model that has been modified in previous studies with steps: potential problem observation, product design, design validation, implementation and evaluation. Worksheet validation is conducted by 2 validators with 3.8 validation results with a valid category. The result of this study on the implementation test on 20 students showed that the N-Gain test results of 0.73 with high categories and students’ habits of mind assessed through questionnaires. It also had an average score of 74.5 with good categories. The result of students’ habits of mind observation indicated that an increase in the three indicators from the first meeting to the last meeting. Based on the results of the study, it can be concluded that the development of chemistry worksheet on project-based learning is valid and effective to train and form students’ habits of mind. This research finding also indicated that there is a positive effect between habits of mind and student learning outcomes with a total effect of 68.4%.
Penelitian ini bertujuan untuk menganalisis apakah terdapat peningkatan kemampuan koneksi matematis siswa kelas VII-1 SMP Negeri 3 Darul Aman pada materi aritmetika sosial yang diajarkan dengan menggunakan pembelajaran berbasis etnomatematika. Metode yang digunakan dalam penelitian ini adalah penelitian kuantitatif dengan jenis penelitian eksperimen satu kelas. Sampel penelitian di kelas VII-1 SMP Negeri 3 Darul Aman yang berjumlah 14 siswa tahun ajaran 2020/2021. Teknik pengumpulan data yang digunakan adalah dengan menggunakan pre-test dan post-test/ pasca-test. Berdasarkan hasil penelitian menunjukkan bahwa( =9,91>ttabel(0,05;13)=2,16) pada taraf signifikan 5%, artinya terdapat peningkatan kemampuan koneksi matematis siswa SMP kelas VII-1 SMP Negeri 3 Darul Aman setelah menggunakan pembelajaran berbasis etnomatematika.
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