JURNAL PENDIDIKAN ILMU PENGETAHUAN ALAM

ANALISIS KESULITAN SISWA DALAM MENYELESAIKAN SOAL HOTS MATERI FLUIDA DINAMIS

Sarpin Sahrul, Rizki Fadilah , Eni Sumanti Nasution — Wed, 11 Nov 2026 12:50:16 +0000

Abstrak

Soal berpikir tingkat tinggi (Higher Order Thinking Skills/HOTS) pada materi fluida dinamis menuntut siswa menghubungkan konsep kekekalan massa dan energi dengan situasi nyata. Penelitian ini memetakan kesulitan siswa kelas XI SMA Negeri 1 Angkola Barat dalam mengerjakan soal HOTS fluida dinamis serta faktor yang melatarbelakanginya. Pendekatan yang digunakan adalah deskriptif kualitatif dengan dukungan angka sederhana. Subjek berjumlah 35 siswa yang dipilih secara purposif. Data dikumpulkan melalui tes uraian lima butir (level C4–C6), angket lima dimensi berskala Likert 1–4, wawancara klinis, observasi, dan dokumentasi. Kelima instrumen divalidasi dua ahli dengan rerata 93,9% (sangat valid). Kesalahan siswa dikelompokkan dengan kerangka Newman yang dimodifikasi, sedangkan keabsahan data diperiksa melalui triangulasi teknik. Nilai rata-rata kelas adalah 50,0; tujuh siswa (20,0%) berkategori tinggi, 19 siswa (54,3%) sedang, dan sembilan siswa (25,7%) rendah. Kesalahan proses/prosedural paling sering muncul (74,3%), disusul kesalahan transformasi konsep (57,1%), perhitungan matematis (51,4%), dan membaca/memahami soal (34,3%). Faktor dominan yang paling banyak ditemukan adalah keterbatasan sarana dan media belajar (54,3%), kemudian miskonsepsi (22,9%), metode mengajar guru (11,4%), serta literasi sains dan numerasi (11,4%). Temuan ini menunjukkan perlunya latihan soal HOTS secara bertahap, pemanfaatan media visual-interaktif, dan remediasi miskonsepsi yang disesuaikan dengan kelompok kemampuan siswa.

PERBANDINGAN SIFAT FISIK TANAH (BERAT VOLUME, KADAR AIR, DAN WARNA TANAH) PADA PENGGUNAAN LAHAN SALAK BERBASIS AGROFORESTRI DAN LAHAN SAWAH MONOKULTUR

Hasna Aminah, Yusriani Nasution, Surya Handayani — Wed, 11 Nov 2026 13:19:05 +0000

Soil physical properties, including bulk density, soil moisture content, and soil color, are important indicators of soil conditions and their capacity to support plant growth. This study was conducted from May to August 2026 to compare these properties between salak-based agroforestry and monoculture rice-paddy land. A field survey with a descriptive-comparative approach was employed. Soil samples were collected from both land-use systems and analyzed using an independent-samples t-test. Bulk density differed significantly between the two systems, averaging 0.96 g cm⁻³ under salak-based agroforestry and 1.09 g cm⁻³ under rice-paddy land (p = 0.025). Soil moisture content did not differ significantly, with respective means of 30.43% and 29.43% (p = 0.384). Soil color coding also differed significantly, with mean values of 4.71 under salak-based agroforestry and 2.71 under rice-paddy land (p = 0.004). These findings indicate that land-use systems were associated with differences in bulk density and soil-color codes, whereas soil moisture content was statistically comparable.

LKPD CANVA-POLYA: EFEKTIFITASNYA TERHADAP KEMAMPUAN PEMECAHAN MASALAH IPA SISWA SMP

Alberta Yuni Crisanta Sihura, Aisyah, Evitamala Siregar; Eni Sumanti Nasution — Wed, 11 Nov 2026 13:46:29 +0000

This study aims to develop Canva-Polya worksheets (LKPD) on Temperature and Heat that are valid, practical, and effective in improving junior high school students’ natural science problem-solving skills. The research employed research and development (R&D) with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The subjects were 30 seventh-grade students at SMP Negeri 7 Padangsidimpuan in the even semester. Instruments included media and material expert validation questionnaires, teacher and student practicality questionnaires, Polya-indicator-based essay tests, and an effectiveness questionnaire. Data analysis used validation and practicality score percentages, classical mastery, and N-Gain. Results showed media expert validity of 86.66% (valid) and material expert validity of 83.08% (valid). Practicality was 90% by teachers and 87.8% by students (very practical). Effectiveness was indicated by an average N-Gain of 0.71 (moderate), classical mastery increasing from 10% to 90%, and a student effectiveness questionnaire score of 93.1% (very good). The representation and generalization indicator obtained the highest N-Gain (0.74), while evaluating again obtained the lowest (0.69). It is concluded that Canva-Polya worksheets are valid, practical, and effective and can serve as an innovative teaching material alternative for Temperature and Heat.