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All Journal Journal of Comprehensive Science Journal of Chemistry Sciences and Education
Anis Azizah
Program Studi Manajemen Fakultas Ekonomi Universitas Kanjuruhan Malang
Chemistry Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Library & Information Science Other

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Pengembangan Soal Matematika Pisa-Like Berkonteks Kearifan Lokal dan Sains Untuk Siswa Kelas VII Azizah, Anis; Suharta, I Gusti Putu; Astawa, I Wayan Puja
Journal of Comprehensive Science Vol. 4 No. 7 (2025): Journal of Comprehensive Science
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jcs.v4i7.3416

Abstract

Penelitian ini bertujuan untuk menghasilkan soal matematika PISA-Like berkonteks kearifan lokal dan sains yang berkualitas berdasarkan validitas isi, reliabilitas, dan tingkat kesukaran sesuai level-level PISA. Jenis penelitian ini adalah penelitian desain dengan tiga tahapan yakni preliminary research, pengembangan, dan evaluasi semi sumatif. Subjek penelitian adalah siswa MTs Negeri 3 Mataram yang berumur di bawah 15 tahun dan berdomisili asli suku sasak. Instrumen penelitian meliputi lembar validasi dan tes matematika PISA-Like berkonteks kearifan lokal dan sains. Data yang diperoleh dianalisis secara kuantitatif. Hasil penelitian menunjukkan bahwa 8 soal matematika PISA-Like berkonteks kearifan lokal dan sains yang sudah dikembangkan valid, reliabel dan tingkat kesukarannya sesuai level-level PISA 2022. Nilai kevalidan yang diperoleh sebesar 80% yang tergolong validitas tinggi, nilai reliabilitas sebesar 0,94 yang tergolong reliabilitas sangat tinggi, dan tingkat kesukaran soal matematika PISA-Like berkonteks kearifan lokal dan sains sudah memuat level 1 hingga level 6 yang terdiri atas dua soal termasuk level 1 (soal 3 dan soal 6), satu soal termasuk level 2 (soal 2), dua soal termasuk level 3 (soal 1 dan soal 7), satu soal termasuk level 4 (soal 5), satu soal termasuk level 5 (soal 8), dan satu soal termasuk level 6 (soal 4).
Perbandingan Efektivitas Metode Maserasi, Digesti, dan Sokletasi terhadap Nilai Konsentrasi Larutan Stok Ekstrak Daun Singkong (Manihot esculenta Crantz) Nieyan, Putri Ananda; Hakiki, Salsabila Sofia; Rahim, Audy Nasyiah; Azizah, Anis; Nurrahmah, Salsabila; Herayati; Saputra, Iwan Syahjok
Journal of Chemistry Sciences and Education Vol 2 No 02 (2025): Journal of Chemistry Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/jcse.v2i02.263

Abstract

Cassava leaves (Manihot esculenta Crantz) are known to contain various bioactive compounds such as flavonoids, tannins, saponins, and alkaloids. This study aimed to compare the effectiveness of three extraction methods maceration, digestion, and Soxhlet extraction in producing stock solutions of cassava leaf extract. A total of 5 grams of cassava leaf simplicia was extracted using methanol 96% (maceration), distilled water (digestion), and methanol 99.9% (Soxhlet). The extract yield was measured by evaporating 1 mL of filtrate and weighing the residue. The results showed that the Soxhlet method produced the highest concentration of 0.085%, followed by digestion (0.0132%) and maceration (0.0106%). Soxhlet extraction was more effective due to its continuous solvent circulation at elevated temperatures and higher solvent volume, resulting in a more efficient extraction of active compounds from the cassava leaves.
Co-Authors Hakiki, Salsabila Sofia Herayati I Gusti Putu Suharta I Wayan Puja Astawa Nieyan, Putri Ananda Nurrahmah, Salsabila Rahim, Audy Nasyiah Saputra, Iwan Syahjok