KOMPARASI MEDIA PEMBELAJARAN KOKAMI DAN MEDIA ULAR TANGGA MENGGUNAKAN MODEL PEMBELAJARAN LANGSUNG PADA MATERI STRUKTUR ATOM TERHADAP HASIL BELAJAR SISWA KELAS X SMA NEGERI 5 AMBON

Comparative study of learning media of mysterious card box with the media of snake ladder on the material of atomic structure to the result of study of class X student of SMA N 5 AMBON. The mysterious card learning media box is applied to the X class MIA1 and the ladder snake media in the X class of MIA3. From the results, the mysterious card learning media box can improve student learning outcomes, seen from the presentation of the achievement of the final test results obtained by the two classes, where the two classes have a presentation of different final result qualification ie qualification completed for class X-MIA1 which uses the mysterious card box learning medium is 100%, and no qualifying fails with an average rating of 85.68. But for the class X-MIA3 using the learning media of snake ladder with qualified thoroughly is 51.51% and qualification failed 48.49% with an average value of 72.95, therefore Mann Whitney test results using SPSS 20 obtained a significance value of 0.002 (> 0.05 ) thus H0 is rejected and H1 is received so it can be concluded that there are differences in student learning outcomes using the mysterious box learning media and learning media snake ladde

STUDI KADUNGAN IODIUM DALAM RUMPUT LAUT EUCHEUMA COTTONII DIPERAIAN KEI KECIL

Iodium berperan penting bagi pertumbuhan manusia. Kekurangan asupan iodium dapat menimbulkan berbagai penyakit. Kebutuhan asupan iodium dapat dipenuhi dengan mengkonsumsi pangan kaya iodium. Rumput laut eucheuma cottonii diketahui miliki kandungan iodium yang tinggi. Perarian Kei Kecil merupakan salah satu sentra pembudidayaan rumput laut eucheuma cottonii dikawasan timur Indonesai. Kandungan iodium dalam rumput laut sangat dipengaruhi oleh tempat pembudidayaannya.  Penelitian ini dilakukan untuk memperoleh informasi tentang kandungan iodium dalam rumput laut eucheuma cottonii diperairan Kei Kecil. Penentuan kandungan iodium menggunakan metode spektrofotometri ultraviolet dengan mengoptimasi konsentrasi H3PO4 dan KI. Hasil penelitian menunjukan rata-rata kandungan iodium dalam rumput laut eucheuma cottonii yaitu 29,96 μg/g. Penelitian dilakukan pada λmaks 351 nm dengan konsentrasi optimum H3PO4 0,6 M dan KI 0,06 M