PENGEMBANGAN PERMAINAN KOTAK-KATIK IPA PADA MATERI SISTEM EKSKRESI SEBAGAI MEDIA PEMBELAJARAN SISWA DI SMP

Penelitian ini bertujuan untuk menghasilkan permainan Kotak-katik IPA pada materi Sistem Ekskresi sebagai media pembelajaran yang layak untuk digunakan. Kelayakan permainan Kotak-katik IPA ditinjau dari tiga aspek yaitu validitas, kepraktisan, dan keefektifan. Jenis penelitian ini adalah penelitian pengembangan dan mengacu pada model pengembangan 4D yang meliputi tahap pendefinisian, perancangan, dan pengembangan. Uji coba terbatas dilakukan kepada 16 siswa kelas VIII-B di SMP Negeri 51 Surabaya dengan menggunakan sistem one group pretest-posttest design. Instrumen yang digunakan dalam penelitian ini adalah lembar validasi, lembar angket respon siswa dan lembar tes hasil belajar (pretest-posttest).  Berdasarkan data hasil penelitian, permainan Kotak-katik IPA sebagai media pembelajaran dinyatakan sangat valid dengan persentase validitas sebesar 93%. Permainan Kotak-katik IPA sebagai media pembelajaran dinyatakan sangat praktis dengan persentase hasil respon siswa sebesar 96,48%. Permainan Kotak-katik IPA sebagai media pembelajaran dinyatakan sangat efektif dengan persentase ketuntasan klasikal hasil belajar siswa sebesar 87,5% dan persentase peningkatan hasil belajar siswa sebesar 100%. Dengan demikian, permainan Kotak-katik IPA dinyatakan layak untuk digunakan sebagai media pembelajaran. Kata Kunci: permainan Kotak-katik IPA, media pembelajaran, kelayakan

Efektivitas Terapi Perilaku Kognitif Untuk Mengurangi Kecemasan Berbicara Di Muka Umum

There were facts t i i ~ ~ mutij)t students have no ability in, and feel anxious, when they have to speak in public (i.e. seminar, discussion, etc.j. The purpose ofthe research was to investigate the effectiveness of cognitive behavior therapy that given to minimize anxiety in public speaking. The subjects were studetlts ofthe Faculty of Psychology, Wangsa Manggala University in Yogvakarta, u~ho had atxiety in public speaking and volunteered to participate in the research. There were 20 student, ten were in the experimental group given the treatment of cognitive behavior therapy. The other ten were in the control group, would be given the therapy after the research had been completed. The subject's an~iet4, before and after the treatment were measured The experiment was conducted by two therapist in five sessions, each sessions was held in 90 minutes. The process of the experiment was observed, and recorded with audio tape recorder. The data was analized quantitatively and qualitatively. The quantitative data was analized with one-way Anove mixed I factor, and the data from the observational record and self report from the subjects were analized qualitatively. The results showed that there was a decrease in public-speaking anxiety of the experimental group. The mean before therapy was 104.300 and after therapy was 85.300. In the control group that had not been treated, there was an increase in anxiety between are pretest and the posttest. The pretest mean was 105.700 and the posttest was 112.800. The qualitative data analysis showed that The Cognitive Behavior Therapy had been usefull to reduce anxiety in public speakin

Juridical Review Of Nominee Agreement In Land Of Tenure Property Rights Under The Book Of Civil Law And Agraria

Nominee agreement is an agreement made between someone who by law can not be the subject of rights to certain lands (property rights), in this case that foreigners (WNA) and Indonesian Citizen (citizen), with the intention that the foreigners can master land de facto property rights, but legal-formal (de jure) land property rights are assigned to his Indonesian citizen. The purpose of this paper isto assess the position of the nominee agreement in Indonesia's legal system and the legal consequences arising in terms of the draft Civil Code and the Law on Agrarian. Agreement is an agreement unnamed nominee made based on the principle of freedom of contract and good faith of the parties. However, it should be noted that the law prohibits foreigners make agreements / related statement stock wealth / property (land) for and on behalf of others, sehingga the legal consequences of the agreement is the nominee of the agreement is not legally enforceable because the agreement was made on a false causa.Keywords: Nominee Agreement; Property Rights; Foreigners

Pengaruh Penambahan Ekstrak Kayu Manis Terhadap Kualitas Sensoris, Aktivitas Antioksidan Dan Aktivitas Antibakteri Pada Telur Asin Selama Penyimpanan Dengan Metode Penggaraman Basah

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan ekstrak kayu manis terhadap aktivitas antioksidan dan aktivitas antibakteri telur asin selama penyimpan, mengetahui konsentrasi ekstrak kayu manis yang mempunyai tingkat penerimaan terbaik terhadap karakteristik sensoris telur asin yang dihasilkan. Lama penyimpanan selama 14 hari (hari ke-0, 2, 4, 6, 8, 10, 12, 14). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari satu faktor, yaitu variasi konsentrasi ekstrak kayu manis (0%, 5%, 10%, 15%, 20%).Hasil uji organoleptik penambahan ekstrak kayu manis 5% diperoleh telur asin terbaik sedangkan penambahan ekstrak kayu manis 20% sebagai pembanding. Hasil analisis selama 14 hari penyimpanan terhadap telur asin dengan ekstrak kayu manis 0% (kontrol), 5% dan 20% berturutturut mengandung aktivitas antioksidan 6,603-0,633 %, 27,765-6,962 %, dan 14,718-0,949 %. Total bakteri pada hari ke 14 pada telur asin kontrol sebanyak 2,8 x 108cfu/g, penambahan ekstrak kayu manis 5% sebanyak 2,8 x 107 cfu/g, penambahan ekstrak kayu manis 20% sebanyak 2,7 x 108 cfu/g. Penambahan ekstrak kayu manis 5% mampu mempertahankan telur asin hingga 6 hari penyimpanan (9,3 x 105 cfu/g)

A Study on the Ability of the Second Year Students of Bina Insan Vocational High School Siak Hulu in Comprehending Recount Texts

The purpose of this study is to find out the second year students' ability of Bina Insan Vocational High School Siak Hulu in comprehending recount texts. This research focuses on finding factual information, finding main ideas, locating the meaning of vocabulary in context, identifying references, and making inferences based on recount texts. Data were collected using reading comprehension test with multiple choice type. The test contained 30 items. The try out was conducted to check the validity and reliability of the test. The research findings are as follows: first, the ability of the students in comprehending recount texts is 51 which is in mediocre level. Second, the students' mean score in finding factual information is 60, the mean score in finding main ideas is 41, the mean score in locating the meaning of vocabulary in context is 69, the mean score in identifying references is 68, and the mean score in making inferences is 68. The highest score obtained by the students is in finding the meaning of vocabulary in context that falls into good ability level, and the lowest score that the students get is in finding main ideas that falls into mediocre ability level

Efikasi Bacillus Thuringiensis H-14 Isolat Salatiga Sediaan Bubuk Dan Cair Terhadap Jentik Culex Quinquefasciatus

Filariasis as a vector­borne disease become a problem in Indonesia with prevalence of 19% in 2009. Culex quinquefasciatus is one of its vectors. Larvae control using Salatiga isolate of Bacillus thuringiensis H­14 liquid and­powder­preparations­are­filariasis­mosquito­control­method.­This­study­aimed­to­determine­the­efficacyof Bt H­14 isolates Salatiga liquid and powder preparations against Cx. quinquefasciatus. The study was conducted by formulating Salatiga isolate Bt H­14 liquid and powder preparation, cells and spores counting of Bt H­14 in each preparation, and conducting the toxicity assay on Cx. quinquefasciatus larvae. The mortality was analyzed using Probit analysis. The results showed that liquid preparations had 1,55x108 cells/ml while the powder preparation had 1,72x106 cells/g. LC90 value of Bt H­14 liquid and powder preparations against Cx. quinquefasciatus were respectively 0.056 ppm and 10.94 ppm. This shows the potential of both preparations in killing Cx. quinquefasciatus­larvae­as­vectors­of­filariasis

Pengaruh Intensitas Cahaya Terhadap Kandungan Klorofil-a Dan -C Zooxanthellae Dari Isolat Karang Lunak Zoanthus SP.

Terumbu karang sangat sensitif terhadap Perubahan alam, salah satunya seperti peningkatan intensitas cahaya. Intensitas cahaya akan mempengaruhi pigmen klorofil-a dan –c alga simbion zooxanthellae yang hidup di dalam jaringan karang, sebab intensitas cahaya memiliki peranan penting dalam proses fotosintesis pada zooxanthellae. Penelitian bertujuan untuk mengetahui pengaruh intensitas cahaya terhadap kandungan klorofil -a dan -c pada zooxanthellae. Penelitian dilaksanakan pada bulan Juli-Agustus 2016, bertempat di Laboratorium Budidaya Perikanan, Program Studi Budidaya Perairan Fakultas Pertanian, Universitas Lampung selama 66 jam. Penelitian menggunakan 4perlakuan dan 5 ulangan yaitu perlakuan intensitas cahaya 3800 lux (IC1), 6250 lux (IC2), 7980 lux (IC3), dan 11800 lux (IC4) dan sampel karang yang digunakan yaitu karang lunak Zoanthus sp. dari Perairan Teluk Lampung. Parameter utama yang diamati adalahkandungan klorofil-a dan -c pada zooxanthellae dengan menggunakan spektrofotometer dan parameter pendukung yaitu kualitas air. Data klorofil-a dan -c dianalisis dengan analisis ANOVA dan dilanjutkan dengan uji BNT. Hasil penelitian menunjukkan bahwapemberian intensitas cahaya yang berbeda memberikan pengaruh terhadap kandungan klorofil-a pada zooxanthellae, tetapi tidak memberikan pengaruh terhadap kandungan klorofil-c pada zooxanthellae

Produksi Dan Pengujian Aktivitas Amilase Burkholderia Cepacia Terhadap Substrat Yang Berbeda

Pati atau amilum merupakan bahan utama yang dihasilkan oleh tumbuhan untuk menyimpan kelebihan glukosa sebagai produk fotosintesis. Burkholderia cepaciamerupakan bakteri yang mampu menghidrolisis pati, karena bakteri tersebutmemiliki enzim amilase. Penelitian ini bertujuan untuk mengetahui pengaruhpemberian substrat yang berbeda terhadap pertumbuhan, indeks amilolitik danaktivitas enzim amilase bakteri B. cepacia. Penelitian ini menggunakan rancanganacak lengkap dengan 3 perlakuan (substrat daun singkong, daun pepaya dan sente)dengan 3 ulangan. Hasil penelitian menunjukkan bahwa bakteri B. cepacia mampuhidup dengan baik pada substrat daun pepaya. Pemberian substrat daun sente memberikan pengaruh terhadap indeks amilolitik yang ditunjukkan dengan adanyazona Bening sebesar 9,8 mm. Aktivitas enzim amilase pada penelitan ini adalah101,8 unit dan konsentrasi protein sebesar 0,094 mg/ml