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Superabsorbent polymer (SAP) is a polymer that has one function as an absorbent material in baby diapers, whose quality is determined by the number of swelling capacity (SC). Many previous studies regarding the effect of synthesis parameters on the number of SC were limited to the laboratory scale, where the polymerization conditions, the number of variables, and SC data obtained were very limited, in contrast to the industrial scale. The radical polymerization stage, with its accompanying operating variables such as reaction temperature, monomer concentration, retention time, crosslinker concentration, the addition of nitrogen gas, and initiator concentration, affects the value of SC in industrial-scale production. This study aims to analyse the correlation between the reactor operating conditions and the number of SAP SC obtained. Correlation data analysis was done using Microsoft Excel with Data Analysis Toolpak and Python by utilizing production data with a total of 1,562 entries, where the correlation between each variable was calculated using Pearson’s correlation coefficient. The analysis determined that the variables that had the strongest correlation with the SC were retention time and reaction temperature, with correlation coefficient values of 0.31 and -0.26. The weakest correlation was obtained from the addition of nitrogen gas and an initiator with a value of -0.07 and -0.02. Positive values indicate a relationship that is directly proportional, while negative values indicate an inverse relationship. Based on the correlation analyses and trends, the ideal polymerization conditions have been identified.

Learning chemistry requires practicum which functions to enrich understanding of chemical materials. Practical practice should ideally be carried out in a laboratory as a representative place to produce accurate and precise data using validated practical instructions. This study aims to create a chemistry practicum guide that is designed to be carried out at home with facilities around the house so that it can function to train student independence. This research is a product development research in the form of using model Analyze, Design, Develop, Implement, and Evaluate (ADDIE). The resulting product was validated by 6 material and media expert validators and then tested limited to 15 chemistry teacher candidate students. The results showed that the practicum instructions obtained an Aikens score of 0.9 from the validator, which means they are valid and feasible to try out. Then after conducting trials and student responses, a response of 86% was obtained in the very good category. Based on the values from the validator and limited trials, these practical instructions can be used by prospective Chemistry teachers in teaching in the classroom and at home.

The electrolytic cell is a chemical material with abstract and concrete concept characteristics. Students often need help learning this material, especially connecting concrete and abstract concepts. Therefore, media is needed that can facilitate students in understanding electrolytic cell material, which is made interesting by utilizing virtual reality technology. The purpose of this research is to produce chemistry learning media based on virtual reality with a feasible and practical MilleaLab platform. The research uses the ADDIE development model (analysis, design, develop, implement, evaluate). The product of this research is virtual reality-based learning media on the MilleaLab platform. The validation assessment from media and material experts with an error rate of 5% based on the Aiken scale obtained Vcount ≥ Vtable (Vtable = 0.87). Each value in the validation of media and material experts is 0.89 and 0.87 with the Valid category. The results of assessing student responses regarding the practicality of this learning media get 88% in the Very Good category. Based on these results, it can be concluded that MilleaLab virtual reality-based learning media on electrolytic cell material is a learning medium that is practical and feasible to use.

The Indonesian government is trying to prepare the next generation of nations to deal with the globalization era; one of these is education. It was transformed in the application of Kurikulum 2013, in which the object of the learning process is more emphasis on phenomena or real events. But, the learning methods are still unvaried, and learning materials based on real-life problems are still not available, which creates a performance gap in the learning process. This research aims to cope with the performance gap by developing the saints, environment, technology, and society (SETS)-oriented module on petroleum topic and determine the students' response. The module developed in this research is done following a phase of the ADDIE developmental model. This developmental model consists of analyze, design, development, implementation, and evaluation. This SETS-oriented module has been trialed to 30 second-grade students of SMA Negeri 8 Kota Serang. According to validation and students' response, the SETS-oriented module developed is valid and got 87,37% of an average percentage of response, which includes great criteria

This research is a research and development (R&D) research that aims to find out the development procedures while producing products and the quality of the Selvo E-module application as a learning medium on the topic of voltaic cells. Research and development is carried out by adapting and modifying the Borg & Gall development model trough preliminary study and development stages with limited trials involving the validation of five media experts. Analysis of the data used during development is descriptive analysis and percentage techniques. The sample in this research were students of class XI MIPA Academic Year 2018/2019. The results showed that the development of chemistry e-module has “very good” qualifications for the material aspect with a percentage of 92% and media with a percentage of 97% according to experts. Based on the responses given by students as an assessment sample, the quality of the Selvo E-module application is included in the excellent category with a percentage of 85.24%.

Siswa masih mengalami kesulitan dalam memahami konsep larutan penyangga, sehingga penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep larutan penyangga dengan menerapkan model pembelajaran POGIL (Process Oriented Guided Inquiry Learning). Penelitian ini dilakukan di SMA Negeri 5 Kota Serang kelas XI tahun ajaran 2017/2018. Metode yang digunakan dalam penelitian ini adalah metode quasi eksperimen dengan desain penelitian two group pre test post test design. Sampel penelitian ini terdiri dari 59 siswa yang terbagi menjadi 2 kelas, yaitu 29 siswa kelas eksperimen dan 30 siswa kelas kontrol yang diperoleh dengan menggunakan teknik purposive sampling. Pengumpulan data pemahaman konsep siswa diperoleh dengan menggunakan instrumen tes. Hasil penelitian mengungkapkan pemahaman konsep larutan penyangga yang diajarkan dengan menggunakan model pembelajaran POGIL mengalami peningkatan yang signifikan yang ditunjukan dengan nilai rata-rata gain sebesar 0,44 yang berada pada kategori sedang.

Penelitian inii bertujuan untuk mengetahui pengaruh pembelajaran PISI dalam meningkatkan hasil belajar kimia siswa kelas XI semester 2 SMA Muhammadiyah 3 Yogyakarta tahun ajaran 2014/2015. Penelitian merupakan eksperimen semu yang terdiri terdiri dari variabel bebas berupa model pembelajaran dan variabel terikat berupa hasil belajar. Populasi penelitian ini adalah 143 siswa kelas XI SMA Muhammadiyah 3 Yogyakarta pada semester kedua Tahun ajaran 2014/2015. Sampel penelitian ditentukan dengan teknik purposive sampling yang terdiri dari dua kelas. Kelas eksperimen menggunakan model pembelajaran PISI dan kelas kontrol menggunakan model pembelajaran 5M dalam materi larutan penyangga. Teknik pengumpulan data melalui teknik tes dan teknik dokumentasi. Teknik analisis data yang digunakan adalah uji-t beda subjek dengan taraf signifikansi 0,05. Hasil penelitian menunjukkan bahwa terdapat pengaruh pembelajaran PISI dalam meningkatkan hasil belajar kimia siswa kelas XI semester 2 SMA Muhammadiyah 3 Yogyakarta tahun ajaran 2014/2015.