No abstract

Desa Tamban Muara, Kecamatan Tamban, Kabupaten Barito Kuala, Kalimantan Selatan merupakan sebuah desa yang memiliki sumber daya alam yang berlimpah berupa tanaman kelapa. Air dari buah kelapa yang ada seringkali tidak digunakan, sehingga pelaksana kegiatan pengabdian masyarakat bermaksud mengolah air kelapa tersebut menjadi Nata de Coco agar lebih bermanfaat. Tujuan dari kegiatan ini adalah agar masyarakat Desa Tamban Muara dapat memanfaatkan dan mengolah air kelapa, serta memiliki pengetahuan dan keterampilan tentang pengemasan dan pemasaran Nata de Coco hasil produksi rumah tangga. Metode kegiatan yang dilakukan berupa penyuluhan dan praktik tentang pembuatan Nata de Coco serta praktik pengemasan dan sosialisasi tentang pemasaran Nata de Coco kemasan. Peserta kegiatan adalah ibu-ibu yang tergabung dalam kelompok Pemberdayaan Kesejahteraan Keluarga (PKK) sebagai perwakilan masyarakat Desa Tamban Muara. Hasil yang diperoleh dari kegiatan tersebut adalah peserta kegiatan mampu: (1) membuat Nata de Coco dari air kelapa yang diperoleh dari lingkungan sekitar; (2) mengemas Nata de Coco menjadi produk yang siap dijual, dan (3) memasarkan Nata de Coco untuk dikonsumsi oleh masyarakat luas. Kegiatan pengabdian masyarakat tersebut diharapkan dapat mendukung pemberdayaan perempuan/ibu rumah tangga dan dan meningkatkan ekomomi keluarga. Tamban Muara Village in Tamban Subdistrict, Barito Kuala Regency, South Kalimantan, is a village that has a lot of coconut trees as natural resources. The availability of coconut water is typically unused, so the community service team decided to process the coconut water into Nata de Coco to be more useful. The aims of the activities are to pursue villagers of Tamban Muara in utilizing and processing coconut water and also in getting knowledge and skills in packaging and marketing of Nata de Coco from household production. Activities method that has been done are counseling and practicing about Nata de Coco production, alongside with packaging and marketing. The participants are representative of the Empowerment of Family Welfare of Tamban Muara Village. The result of this activity are the representative can: (1) produce Nata de Coco from coconut water of village; (2) package Nata de Coco become a product that ready to sell; and (3) market Nata de Coco to be consumed by the wider community. The community service activities are expected to support the empowerment of the women/housewife and to increase family economically.

Pelaksanaan evaluasi pembelajaran merupakan salah satu kompetensi profesional guru yang penting untuk mengukur kualitas hasil belajar siswa. Pada mata pelajaran kimia, evaluasi pembelajaran tersebut perlu dilakukan secara detil hingga diketahui sejauh mana pemahaman konsep yang dimiliki siswa. Salah satu instrumen evaluasi pembelajaran yang dapat digunakan adalah tes diagnostik bentuk bertingkat atau multi–tier. Beberapa penelitian di Indonesia melaporkan bahwa guru cenderung mengalami kesulitan dalam mengembangkan instrumen evaluasi yang berbasis diagnostic multi–tier. Kegiatan Pengabdian kepada Masyarakat (PkM) berikut bertujuan untuk membantu guru menjadi terampil dalam mengembangkan instrumen evaluasi diagnostik multi–tier. Peserta kegiatan adalah seluruh guru kimia dari MGMP (Musyawarah Guru Mata Pelajaran) Kimia Kabupaten Barito Kuala, Kalimantan Selatan. Kegiatan PkM dilaksanakan sebanyak dua kali secara daring. Metode kegiatan meliputi: (1) Penyampaian materi oleh narasumber; (2) Diskusi dan tanya–jawab antara narasumber dengan peserta; (3) Penugasan kepada peserta; dan (4) Evaluasi hasil penugasan. Instrumen evaluasi diagnostik multi–tier yang telah dikembangkan oleh peserta kegiatan Pengabdian kepada Masyarakat diharapkan dapat menguatkan kompetensi profesional guru Kimia Implementation of learning evaluation is one of the teacher's professional competence that is important to survey students' quality of learning outcomes. The evaluation in chemistry subject needs to be done detailly in determining how students understand the concepts. One of the learning evaluation instruments that can be used is multi-tier diagnostic. Several studies in Indonesia reported that teachers experience difficulties developing evaluation instruments based on multi-tier diagnostic. The following community service activities aimed to help teachers become skilled in developing multi-tier diagnostic evaluation instruments. Participants in the activity were all chemistry teachers from the MGMP (Musyawarah Guru Mata Pelajaran) of Barito Kuala Regency, South Kalimantan. The activity was carried out twice online. Methods of activity included: (1) Delivering material by the speakers; (2) Discussions between speakers and participants; (3) Assigning participants; and (4) Evaluating the assignment's result. There was expected that the multi-tier diagnostic evaluation instruments developed by participants of community service could strengthen their professional competence.

The following research is aimed to investigate undergraduate students' conceptual understanding and their conceptual consistency in chemical kinetics. Moreover, it is also projected to classify the concepts based on easiness to be understood correctly or other that led to producing alternative concepts. This investigation had been carried out with 64 undergraduate students of the fifth semester of the Chemistry Education Department, Lambung Mangkurat University, who had finished the Reaction Rate topic. The instrument used was the Four-Tier Diagnostic Test and Chemistry Concept Inventory. Students' answers are classified based on their conceptual understanding. Besides, the answer's pattern showed the conceptual consistency that refers to their understanding. The whole students' conceptual consistencies were the basis that formed the conceptual model. The result shows that more students have alternative concepts than those who have misconceptions. Thus, only a few students have mastered the correct conceptions.

Jeruk Siam Banjar (Citrus nobilis Lour. Var. microcarpa Hassk) merupakan varietas unggul asli pulau Kalimantan. Salah satu daerah yang membudidayakan jeruk Siam Banjar adalah Desa Karang Bunga, Kecamatan Mandastana, Kabupaten Barito Kuala, Kalimantan Selatan. Salah satu produk hasil budidaya tersebut berupa penyanitasi tangan aromaterapi dari limbah kulit jeruk. Program pelatihan ini ditujukan kepada pengelola unit usaha Rumah Jeruk dalam memproduksi penyanitasi tangan aromaterapi dari ekstrak kulit jeruk Siam Banjar dan mengetahui efektivitas produk tersebut dalam membunuh kuman. Metode yang digunakan terdiri dari tiga tahap, yaitu: (1) tahap maserasi; (2) tahap pengolahan penyanitasi tangan aromaterapi; dan (3) tahap uji angka kuman produk penyanitasi tangan aromaterapi. Kegiatan tersebut menghasilkan produk penyanitasi tangan aromaterapi yang dapat diolah secara mandiri oleh pengelola unit usaha Rumah Jeruk. Produk penyanitasi tangan aromaterapi memiliki beberapa persentase efektivitas membunuh kuman, tergantung dari bahan dasar yang digunakan. Penyanitasi tangan tanpa kulit jeruk (blanko) memiliki efektivitas 33,3%. Sementara itu, penyanitasi tangan dengan ekstrak kulit jeruk kering memiliki efektivitas 69,5%, sedangkan penyanitasi tangan dengan ekstrak kulit jeruk segar memiliki efektivitas 95%. Hasil tersebut menunjukkan bahwa kulit jeruk Siam Banjar dalam keadaan segar paling efektif dalam membunuh kuman. Siam Banjar Orange (Citrus nobilis Lour. Var. microcarpa Hassk) is the prime variety originally from Kalimantan island. One region that cultivates the Siam Banjar Orange is Karang Bunga Village, Mandastana, Barito Kuala, South Kalimantan Province. One cultivated product is the aromatherapy hand sanitiser from orange peel waste. The training program addressed the Rumah Jeruk business unit employees in producing aromatherapy hand sanitizer from Siam Banjar orange peel extract and finding out the effectiveness in killing germs of the product. The methods used consisted of three stages, namely: (1) maceration; (2) processing aromatherapy hand sanitizer; and (3) germ number testing of aromatherapy hand sanitiser. The activity produced aromatherapy hand sanitizer that can be processed independently by the Rumah Jeruk business unit employees. The aromatherapy hand sanitizer had several percentages of effectiveness in killing germs, depending on the basic substance used. Hand sanitizer without orange peel (blanko) has 33.3% effectiveness. Meanwhile, hand sanitizer with dried orange peel extract had an effect in killing germs by 69.5%, while hand sanitizer with fresh orange peel extract had 95% effectiveness. These results indicated that the Siam Banjar orange peel in a fresh state is the most effective in killing germs.