Penerapan Model Clis Berbantuan Lks Concept Cartoon Untuk Meremediasi Miskonsepsi Materi Hukum Archimedes SMP

This research aims to find out that remedy using application of Children Learning in Science (CLIS) learning model assisted with concept cartoon worksheet is effective to correct misconception of VIII class students of SMP Muhammadiyah 1 Pontianak on Archimedes Law material. Research sample involves 19 students of class VIII C. Research design used is pre-experimental design with one group pre-test post-test design form. Collecting data tool consists of 9 questions which represent 3 Archimedes Law concept. According to the answer analysis of pre-test and post-test, the decline in number of students who have misconception before and after the remedy for each concept is averagely 64%, the decline of each student's misconception before and after the remedy is 57%. The remedy using application of CLIS learning model assisted with concept cartoon worksheet is effective to decline the misconception students have, so it is expected to become one of learning model alternative in learning physic

ANALISIS KESULITAN PESERTA DIDIK DALAM PENYELESAIAN SOAL HOTS TENTANG DINAMIKA ROTASI PADA KELAS XI

AbstractThis research aims to reveal the profile, the percentage and to find out the causes of students’ difficulties in solving about rotational dynamics and statistic equilibrium. This Research conducted at MAN 2 Pontianak which subjects are 5 out of 20 students who were given the test. Data collected by giving the HOTS essay questions and interviews. The analysis data technic was Miles and Huberman. The results show that students' difficulties are divided into 5 according to the Heller problem solving stages. (1) The difficulty of visualizing the problems by students was 63.75%. Because they do not know how to draw a sketch on each question. (2) The difficulty of physics description by students was 21.25 %. Because they do not understand the problems given to the questions. (3) The difficulty of making the plan solution was 58,75%. Because they do not understand the concepts used in the questions. (4) The difficulty of executing the plan was 71,25%. Because they do not know the concepts used in the questions and do not understand the arithmetic operations. (5) The difficulty of checking and evaluating was 78,75%. Because they are not careful in checking the answers and being hurry to finish the questionsKeywords: Analysis Difficulty, Problem Solving HOTS, Rotational Dynamics and Statistic Equilibriu

Kelimpahan Larva Udang Penaeid pada Saat Pasang di Saluran Tambak Desa Gempolsewu, Kab. Kendal

Larva udang merupakan organisme yang bersifat planktonik, hidupnya mengapung atau melayang yang pergerakannya dipengaruhi oleh arus. Kemampuan renangnya sangat terbatas hingga keberadaannya sangat ditentukan ke mana arus membawanya. Distribusi dan kelimpahan larva udang di perairan dipengaruhi oleh arus pasang surut. Pergerakan arus saat pasang yang terjadi di perairan pantai akan membawa larva udang menuju muara, kemudian memasuki sungai yang nantinya akan masuk ke dalam saluran tambak. Tujuan penelitian ini untuk mengetahui komposisi dan kelimpahan larva udang penaeid yang masuk ke dalam saluran tambak dan mengetahui pengaruh perbedaan jarak lokasi saluran tambak dengan muara terhadap ketersediaan larva udang Penaeid di Desa Gempolsewu, Kab. Kendal. Penelitian dilakukan pada bulan Desember 2014 -Januari 2015. Lokasi penelitian terdiri dari dua stasiun dengan jarak 300 m dari stasiun I ke stasiun II. Teknik pengambilan sampel larva udang dalam penelitian ini menggunakan metode purposive sampling. Pengambilan sampel larva udang dilaksanakan dengan menggunakan metode pasif di mana plankton net diameter 45 cm dan mesh size jaring 150 mikron dipasang di tengan saluran tambak menghadap muara selama 1 jam. Spesies Larva udang Penaeid yang ditemukan selama penelitian pada kedua stasiun yaitu Penaeus merguiensis dan Metapenaeus sp. Kelimpahan yang diperoleh selama penelitian pada stasiun I sebanyak 412 ind/100m3 dengan jumlah stadia mysis 240 ind/100m3 dan postlarva 172 ind/100m3. Pada stasiun II sebanyak 312 ind/100m3 dengan jumlah stadia Mysis 214 ind/100m3 dan postlarva 98 ind/100m3. Kelimpahan Relatif Penaeus merguiensis 84% pada stasiun I dan 90% pada stasiun II. Sedangkan Kelimpahan Relatif Metapenaeus sp. 16% pada stasiun I dan 10% pada stasiun II. Berdasarkan hasil penelitian dapat disimpulkan bahwa jarak dari bibir sungai/ estuari berpengaruh pada kelimpahan larva udang. Shrimp larvae is planktonic organisms that live by floating or drifting, and its movement is affected by current. Its Swimming ability is very limited, so the presence is determined where the flow through. Distribution and abundance of shrimp larvae in waters influenced by tidal current. The current when flood tide that transport shrimp larvae to the estuary, then enter the river until to the channel brackish water ponds. The purpose of this study was to determine the composition and abundance of penaeid shrimp larvae that enter the channel ponds and to determine the effect of different distance of channel pond locations with the estuary toward the availability of Penaeid shrimp larvae in the Gempolsewu Village, Kendal. The study was conducted from December 2014 to January 2015. Location of the study consists of two stations with a distance 300 m from stasiun I to stasiun II. The sampling technique of collecting shrimp larvae in this study used purposive sampling method. Sampling of the shrimp larvae was carried out by using the passive method in which the plankton net of 45 cm diameter and 150 micron mesh size nets were installed in the middle of channel facing the estuary when flood tide for 1 hour. The result showed that two spesies of Penaeid shrimp larvae i.e Penaeus merguiensis and Metapenaeus sp. were found in both stasions. The abundance of both spesies obtained during the research in the station I was 412 ind / 100m3 consist of stadia mysis 240 ind / 100m3 and postlarva 172 ind / 100m3. While at the station II was 312 ind / 100m3 consist of stadia Mysis 214 ind / 100m3 and postlarva 98 ind / 100m3. Relative abundance of Penaeus merguiensis 84% at station I and 90% at station II. While the Relative Abundance Metapenaeus sp. 16% at station I and 10% at station II. Based on the results of this research could be concluded that the distance from mouth of river/ estuary influenced the abundance of shrimp larvae

Deskripsi Kesalahan Siswa dalam Menggunakan Jangka Sorong pada Materi Pengukuran di Kelas X SMA Negeri 1 Mempawah Hilir

This reseach was aimed to describe the forms of error made by the students of class X SMA Negeri 1 Mempawah Hilir in performing measurement using calipers. This type of reseach is survey reseach. Sampling technique used intact group, as many as 33 students. Data collection tool used is the assessment form student performance. It obtained from performance tests to measure the outside diameter, inside diameter, and depth of test tube. From the results of analyzes of the data, obtained by the average percentage of students who either each measurement: (1) outside diameter measurement of the test tube is 43.02% (2) inside diameter measurement of the test tube is 61.95% (3) depth measurement of the test tube is 49.39%. This reseach is expected to help teachers of physics to overcome the mistakes of the student

Studi Pengaruhnya Deterjen terhadap Komposisi dan Kelimpahan Fitoplankton di Sungai Banjir Kanal Timur Semarang

Sungai Banjir Kanal Timur merupakan sungai yang terletak di daerah Semarang Timur. Sepanjang aliran sungai terdapat pemukiman warga setempat, perikanan, dan kawasan industri. Deterjen adalah pembersih sintesis yang terbuat dari bahan-bahan turunan minyak bumi dan mengandung bahan-bahan kimia antara lain surfaktan, builder, filler, dan additives. Surfaktan mempunyai perbedaan yaitu hydrophile (suka air) dan hydrophobe (suka lemak). Fitoplankton merupakan organisme yang hidup di perairan berukuran sangat kecil dan dapat menguntungkan bagi organisme lainya serta sebagai produser utama di dalam rantai makanan yang ada di perairan. Tujuan penelitian untuk mengetahui konsentrasi deterjen, kelimpahan, indeks keanekaragamaan, keseragamaan, serta dominasi fitoplankton dan saprobik indeks, pengaruh konsentrasi deterjen terhadap fitoplankton di Sungai Banjir Kanal Timur Semarang. Metode penelitian yang digunakan dalam pengumpulan data adalah metode penelitian survey. Pengambilan sampel dengan metode purposive sampling. Konsentrasi deterjen tertingi sebesar 7,67 mg/L, kelimpahan fitoplankton sebesar 1405 ind/L dengan 13 genera, keanekaragaman sebesar 2,61, keseragaman sebesar 1 serta dominasi fitoplankton sebesar 0,13 dan yang mendominasi adalah Euglena sp. dari kelas Euglenoidea dan Indeks Saprobitas sebesar -0,42 dan Trofik Saprobik Indeks sebesar -0,10. Perairan tersebut termasuk dalam golongan α-Mesosaprobik/perairan cukup berat. Hasil tersebut menunjukkan bahwa adanya pengaruh antara konsentrasi deterjen dengan kelimpahan fitoplankton menunjukkan korelasi yang erat sekali (r) 0,963. Nilai R2 (determinasi) 0,927 dengan tingkat keeratan sebesar 92,7 % . Banjir Kanal Timur River is located in east part of Semarang. Along the river there are local residents, fisheries activity and industrial area. Detergent is sintetic cleaning which made from derivated of oil and containing chemical material such as surfactan, builder, filler, and additives. There are 2 kind of surfactan, hydrophile dan hydrophobe. Phytoplankton is small organism living in the waters dan favorable to others organism, phytoplankton is main producer in waters food chain. This purpose research are to know detergent concentration, phytoplankton abundance, diversity, eveness, domination and saprobic indexs, and the influence of detergent the living of phytoplakton in Banjir Kanal Tmur River Semarang. This methode research used survey research and to colect the samples/datas used purposive sampling methode. The highest concentration detergent is 7.67 mg/L and phytoplankton abundance is 1405 ind/L with 13 genera. This research showed that diversity is 2,61, eveness is 1 and the domination is 0.13, dominated by Euglena sp. from class of Euglenoidea. This research also show that Saprobic index is -0.42 and trophic saprobic index is -0.10, this mean that Banjir Kanal Timur River is clasified of α-Mesosaprobik waters or the river is in high contamination. This result show that there is high corelation between detergent consentration and phytoplankton abundance with (r) value is 0.963, (R2) determination value is 0.927 and precentage is 92.7%

Remediasi Kesalahan Siswa Menyelesaikan Soal Gas Ideal melalui Metode Learning Together di SMA

This research aims to remediate students\u27 errors in solving ideal gas problems using Learning Together method assisted by Student Worksheet among students in Junior High School 1 Sekayam. Pre-experimental desing was choosen as the method in this research, using intact group method, 28 students from class XI IPA 2 academic year 2013/2014 was chosen to participate in the one group pretest-posttest design. McNemar and Chi Quadrat test showed that there was a significant decline in the number of students who experience mathematical errors (36,42%), physics errors (31,42%) and conception errors (21,42%). It is sugested for further study to conduct an alternative remediation activity in order to improve these results

Remediasi Miskonsepsi Menggunakan Model Pbl Tentang Keseimbangan Benda Tegar Di SMA K Immanuel Pontianak

This research is aimed to determine the effectiveness of Problem Based Learning (PBL) model to remediate the student's misconception about balance of rigid body in SMA K Immanuel Pontianak. This research design is “Pre-Experimental Design” with “One Group Pretest-Post test Design”. The instrument of data collector by using a multiple choices test consisting of three alternative choices with open reasons. This research involved 70 students of class XI IPA who had misconception. From the analysis result, remediation using PBL model significantly decrease number of student's misconception with zcount = -7,246 (α = 5%), influential to student's conceptual change by X2count > X2table (α = 5%) for each question item, and effective to overcome the student's misconception (ES = 3,26, high category). This research hopefully to be used by teacher to remediate student's misconception about balance of rigid body