Efektivitas Pembelajaran Kimia Melalui Pemanfaatan Teknologi Daring Selama Pandemi Covid-19¬ di Program Studi Pendidikan Kimia Universitas Nusa Cendana

Penelitian ini bertujuan untuk mengetahui efektivitas pembelajaran kimia melalui pemanfaatan teknologi daring serta mengetahui perbedaan hasil belajar mahasiswa selama pandemi covid-19 menggunakan teknologi daring dibandingkan hasil belajar mahasiswa secara tatap muka/langsung di program studi pendidikan kimia Universitas Nusa Cendana. Metode penelitian yang digunakan adalah metode kombinasi penelitian kuantitatif dan kualitatif. Terdapat perbedaan hasil belajar mahasiswa sebelum pandemi covid-19 (pembelajaran luring) dan selama pandemi covid-19 (pembelajaran daring) pada mata kuliah Kimia Fisik 2, Statistika, Belajar dan Pembelajaran, Pengembangan Program Pembelajaran Kimia, dan Komputer untuk Pembelajaran Kimia, sementara untuk mata kuliah Kimia Dasar 2 tidak ada perbedaan hasil belajar mahasiswa sebelum pandemi covid-19 (pembelajaran luring) dan selama pandemi covid-19 (pembelajaran daring). Nilai rata-rata mahasiswa yang lebih tinggi pada saat pembelajaran daring dibandingkan pada saat pembelajaran luring yaitu mata kuliah Kimia Fisik 2, Statistika, dan Pengembangan Program Pembelajaran Kimia. Itu artinya bahwa pembelajaran daring pada mata kuliah tersebut tergolong efektif. Sementara nilai rata-rata mahasiswa yang lebih tinggi pada saat pembelajaran luring dibandingkan pada saat pembelajaran daring yaitu mata kuliah Belajar dan Pembelajaran dan Komputer untuk Pembelajaran Kimia. Itu artinya pembelajaran daring pada kedua mata kuliah itu masih kurang efektif sehingga perlu diperbaiki segala kekurangan yang ada. Mahasiswa dan dosen lebih cenderung menggunakan perpaduan aplikasi pembelajaran daring yang mudah digunakan guna mendukung kegiatan pembelajaran selama pandemi covid-19, seperti Zoom, Google Meet, Whatsapp, dan E-Learning. Ketertarikan mahasiswa dalam pembelajaran daring masih tergolong cukup. Hal ini dipengaruhi oleh beberapa faktor yang salah satunya adalah mahasiswa kadang-kadang mengalami kendala gangguan internet, sehingga pembelajaran daring menjadi tergangg

Implementasi Penuntun Praktikum IBM untuk Meningkatkan Hasil Belajar Kimia Siswa pada Materi Kimia Larutan

Learning innovations through interactive practical guide is expected to improve the quality of education and human resources that can keep abreast of technology. The objective of this research was to know the difference between the students cognitive learning outcomes of students that learned to use IBM (Interactive Based Multimedia) practical guide compared with the students that learned to use practical guide in school and to determine the percentage of increase learning outcomes. The population in this research is all of eleventh grade students of SMAN 5 Medan. Samples were taken by purposive sampling. This research was conducted by using experimental with randomized control group pretest-posttest design. The results show that the implementation of IBM practical guide provided the cognitive learning was higher to students that learned to use IBM practical guide compared than results of students that learned to use practical guide in school. The percentage of increase learning outcomes to students that learned to use IBM practical guide was 74% with the high category, while the students that learned to use practical guide in school was 65 % with the medium category. Teachers are expected to be able to use IBM practical guide to improve students learning outcomes in chemical solution topic, at once improve the quality of education and human resources

Kimyasal ve mineral katkıların kendiliğinden yerleşen harçlarıntaze özellikleri üzerindeki etkileri.

Fresh properties of mortars are important factors in altering the performance of self compacting concrete (SCC). Measurement of the rheological properties of the fine mortar part of concrete is generally used in the mix design of SCC. It can be stated that SCC rheology can be optimized if the fine mortar part of concrete is designed properly. However, measurement of the rheological properties is often impractical due to the need for complex equipment. Therefore, more practical methods of assessing mortar workability are often preferred. In this study, four mineral admixtures, three superplasticizers (SP) and two viscosity modifying admixtures (VMA) were used to prepare self compacting mortar (SCM). The mineral admixtures included fly-ash, brick powder, limestone powder, and kaolinite. Two of the SPs were polycarboxylate based and another one was melamine formaldehyde based. One of the viscosity modifying admixtures was based on an aqueous dispersion of microscopic silica and the other one was based on high molecular weight hydroxylated polymer. Within the scope of the experimental program, 43 mixes of SCM were prepared from different materials with keeping the amount of mixing water constant. Workability of the fresh mortar were determined using V - funnel and slump flow tests. The setting time of the mortars, were also determined. The hardened properties that were determined included the ultrasonic pulse velocity (UPV) and the strength which was determined at 7, 28, and 56 days. It was concluded that among the mineral admixtures used, only fly-ash and limestone powder increased the workability of the mixes. The two polycarboxylate based SPs yield approximately the same workability and the melamine formaldehyde based SP was not as effective as the other two.M.S. - Master of Scienc

Analysis of Teacher’s Ability in Setting Learning Objectives, Flow of Learning Objectives, And Modules in The Merdeka Curriculum

The purpose of this research is to determine the ability of subject teachers in developing learning tools in the independent curriculum. The results showed that as many as 40% of teachers were proficient and 60% of teachers were very proficient in carrying out or modifying learning objectives. As many as 40% are in the poor category, namely subject teachers who have not shown understanding in understanding the concept of teaching modules, and have not been able to modify teaching modules properly according to the goals, needs, and characteristics of the school. A total of 20% were in the sufficient category, namely, the subject teachers were quite good at understanding the concept of the teaching module, and were able to modify the teaching module following the objectives, needs, and characteristics of the school but still needed intensive guidance from resource persons. While 0% are in the advanced category, namely subject teachers understand the concept of teaching modules and are able to modify teaching modules properly according to the goals, needs, and characteristics of the school, but in some aspects, they still need resource guidance, for very advanced category 0% are subject teachers really understand the concept of teaching modules and can modify teaching modules properly according to the goals, needs and characteristics of the school independently

Pelatihan Pewarnaan Alami Untuk Pembuatan Kain Tenun di Kecamatan Nekamese, Kabupaten Kupang

The making of traditional woven fabrics has traditionally used natural coloring. But at present, the manufacture of woven fabrics has been greatly influenced by the use of yarn from factories that have been colored with textile dyes. The use of colored yarn from the factory is due to the use of natural materials that fade quickly. The traditional knowledge of natural coloring began to forgotten. The Nekamese area has the potential for plants that can used as natural dyes. In addition, there are also natural ingredients that can be used as a mixture so that the color of woven fabrics does not fade. However, the partners do not have the knowledge and skills to utilize plants as natural dyes for making woven fabrics

The Implementation of the Case Method with Blooket Media to Enhance Student Learning Outcomes in Radiochemical Material

Research related to the implementation of learning models to improve the quality of learning continues to be carried out in line with changes in the applicable curriculum. The selection of the right learning model with the help of fun game media is the basis for this research, so that learning becomes more meaningful and not boring. This is a quasi-experimental study using a "nonrandomized pretest-posttest control group design."  Before the t-test, a prerequisite test was carried out in the form of a normality test (using the Liliefors test) and a homogeneity test (using the Levene test). In addition to hypothesis testing, this study also calculated the score increase (N-Gain) from the pretest and posttest data. The t count value is 2.88, while the t table value at = 0.05 with dk = 51 is 1.67. The hypothesis is supported because the t count value is greater than the t table value (2.88 > 1.67). In addition to the t count and t table values, the r2 = 0.1403 value was examined.  This coefficient value of 14.03% indicates the level of effect of employing the case method with blooket media on increasing student learning outcomes in the Radiochemistry subject