Students’ misconceptions have become phenomenon in teaching and learning, especially in chemistry which is considered as difficult subject. The objective of this study is to identify undergraduate student’s misconception profiles related to acid-base concepts in inorganic chemistry. This test was conducted with 15 item three tier multiple choices test. Data were identified descriptively and qualitatively. This test instruments are judged as valid with CVR score of 0,99 and mean of 1,73. Meanwhile, the reliability for this instrument varies for each tier combination; for tier one only, r11 was given reliability score for 0,93; for combination tier one and tier two, r11 score was 0,90, and for combination of all tiers, r11 score was 0,81. The test conducted revealed that average percentage of misconception in this test is 33.31% for all items. The highest misconception profile is 60,61% in item no.6 hard soft acid base concept. This includes 15,15% misconception false positive, 9,09% misconception false negative, and 36.36% specific misconception.
Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran kooperatif tipe Student Teams Achievenment Divisions (STAD) terhadap hasil belajar kimia. Jenis penelitian ini adalah quasi eksperimen menggunakan pendekatan kuantitatif dilaksanakan bulan Januari - Maret 2020. Penelitian ini diharapkan bisa memberikan gambaran dan informasi tentang penggunaan model pembelajaran kooperatif tipe STAD dalam kegiatan belajar mengajar di sekolah, khususnya dalam pembelajaran kimia dan dampaknya terhadap hasil belajar pada materi asam basa kelas XI MA Qomarul Huda Bagu t.a 2020. Desain penelitian yang digunakan adalah quasi eksperimen menggunakan rancangan penelitian post-test only control grup design. Metode pengumpulan data yang digunakan adalah tes tertulis dalam bentuk pilihan ganda. Bentuk data dalam penelitian ini tidak normal sehingga uji hipotesis menggunakan uji Mann Whitney. Berdasarkan output dari uji man whitney diketahui bahwa nilai Asymp sig sebesar 0,029 < 0,05 dan nilai maka ada pengaruh model pembelajaran kooperatif tipe STAD terhadap hasil belajar kimia siswa kelas XI MA Qomarul Huda Bagu Tahun Pelajaran 2020.
Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model pembelajaran problem based learning terhadap peningkatan keterampilan berpikir kritis dan pemahaman konsep siswa pada materi larutan penyangga. Metode pelaksanaannya menggunakan desain pretest and posttest control group design yaitu penelitian yang melihat perbedaan hasil pretest dan hasil posttest antara kelas eksperimen dan kelas kontrol. Populasi penelitian ini adalah kelas XI IPA sebanyak 3 kelas. Pengambilan sampel dengan teknik simple random sampling sehingga didapat XI IPA 2 sebagai kelas eksperimen dan XI IPA 1 sebagai kelas kontrol. Analisa uji perbedaan rata-rata hasil posttest kelas eksperimen menunjukan hasil yang lebih baik dibandingkan kelas kontrol. Kelas eksperimen memperoleh rata-rata nilai posttest 72,08 sedangkan nilai kelas kontrol 65,48. Uji N-Gain pada hasil belajar kognitif siswa menunjukan bahwa kelas eksperimen mengalami peningkatan lebih baik dalam keterampilan berpikir kritis dan pemahaman konsep sebesar 63,2976 dan kelas kontrol peningkatannya sebesar 56,50 dengan kriteria sedang. Bedasarkan hasil analisis tersebut disimpulkan bahwa terdapat pengaruh penerapan model pembelajaran problem based learning terhadap peningkatan keterampilan berpikir kritis dan pemahaman konsep siswa pada materi larutan penyangga.
One of the areas in West Nusa Tenggara Province where cases of drug abuse are rampant is Bima City & Bima Regency. Data on drug abuse by the age of 15-25 years in Bima City and Bima Regency even reached 63% compare to its total case. So that researchers are interested in choosing a theme related to the level of scientific literacy of drug abusers in the Bima City & Bima Regency. This study is a quantitative study to determine the level of scientific literacy of drug abusers in Bima City and Bima Regency with a sample of 25 people and using scientific literacy instruments to collect related data. The results of the study then showed that the scientific literacy level had an average achievement of 18.93 which was in the low category. Where for the existing scientific literacy aspect, both the knowledge aspect (K) is in the low category with an average achievement percentage of 21.6% while the competency aspect (C) is in the low category with an average of 24.39%.
The development of various technological in the era 4.0 does not only have a positive impact on people's lives. It will cause negative things, one of which is drug abuse. One of the areas where cases of drug abuse are rampant is Bima. Data on drug abuse by the age of 15-25 years even reached 63 percent. So that researchers are interested in choosing a theme related to the level of Islamic literacy of drug abusers. This study is a quantitative study with a sample of 25 people and using Islamic literacy instruments to collect related data. The results of the study then showed that the level of Islamic literacy had an average achievement of 29.75 which was in the low category. Where for each aspect, namely the belief aspect by 16% (very low), the ritual and surrender aspect respectively by 34% (low) and the knowledge aspect by 35% (low).
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