Upaya Meningkatkan Hasil Belajar Fisika Melalui Model Pembelajaran Inquiry Terbimbing Pada Peserta Didik Kelas VIII SMP Muhammadiyah Limbung

Penelitian ini adalah penelitian classroom action research (penelitian tindakan kelas) yang bertujuan untuk mengetahui apakah model pembelajaran Inquiry Terbimbing dapat meningkatkan hasil belajar fisika peserta didik kelas VIII4 SMP Muhammadiyah Limbung. Subjek penelitian ini adalah peserta didik kelas VIII4 SMP Muhammadiyah Limbung pada semester ganjil tahun pelajaran 2014/2015 dengan jumlah peserta didik 45 orang. Penelitian ini dilaksanakan sebanyak dua siklus, pengambilan data dilakukan dengan menggunakan tes hasil belajar dan observasi. Data hasil belajar dianalisis dengan menggunakan analisis kuantitatif dan data hasil observasi dianalisis dengan analisis kualitatif. Hasil penelitian menunjukkan bahwa nilai rata-rata peserta didik pada siklus I sebesar 68,67. Sedang pada siklus II diperoleh nilai rata-rata peserta didik sebesar 75,44. Hal ini memperlihatkan adanya peningkatan hasil belajar fisika. Dari hasil penelitian ini dapat disimpulkan bahwa dengan diterapkan model pembelajaran Inquiry Terbimbing pada peserta didik kelas VIII4 SMP Muhammadiyah Limbung dalam proses pembelajaran, maka hasil belajar fisika, dan keaktifan peserta didik dapat meningkat.Kata kunci: Hasil Belajar, Model Pembelajaran, Inquiry Terbimbing.This research is a classroom action research that aims to determine whether guided inquiry learning model to improve learning outcomes of students in class VIII4 physics SMP Muhammadiyah Limbung. The research subjects were students of class VIII SMP Muhamadiyah Limbung unsteady on odd semester of the school year 2014/2015 the number of students 45. This study conducted by two cycles, data retrieval is done by using the achievement test and observation. Learning outcome data were analyzed using quantitative analysis and data were analyzed with the observation of qualitative analysis. The results showed that the average score of students in the first cycles of 68,67. Where as in the second cycles obtained average value 75,44 students. The results showed an increase in learning outcomes physics. Of the results of this study it can be concluded that the applied model of guided inquiry learning among students in class VIII SMP Muhammadiyah Limbung in he learning process, the learning outcomes of physics and active learners can increas

Penerapan Metode Pembelajaran Eksperimen Dengan LKPD Terstruktur Terhadap Peningkatan Hasil Belajar Fisika Peserta Didik Kelas X SMA Negeri 2 Sukamaju

Penelitian ini bertujuan untuk: (1) mendeskripsikan hasil belajar fisika peserta didik kelas X SMA Negeri 2 Sukamaju sebelum dan setelah diterapkan metode pembelajaran eksperimen dengan LKPD Terstruktur, dan (2) mendeskripsikan peningkatan hasil belajar fisika peserta didik kelas X SMA Negeri 2 Sukamaju setelah diterapkan metode pembelajaran eksperimen dengan LKPD Terstruktur. Jenis penelitian ini adalah penelitian pra-eksperimen dengan sampel populasi penelitian yaitu peserta didik kelas X IPA 2 SMA Negeri 2 Sukamaju dengan jumlah peserta didik 36 orang. Desain penelitian yang digunakan adalah One Group Pre-test Post-test Design. Hasil penelitian menunjukkan bahwa terdapat peningkatan hasil belajar fisika peserta didik kelas X SMA Negeri 2 Sukamaju setelah diterapkan metode pembelajaran eksperimen dengan LKPD Terstruktur dengan hasil pre-test diperoleh skor maksimal perolehan peserta didik 15 dan skor minimum 4 dan pada saat post-test skor maksimal perolehan peserta didik 19 dan skor minimum 5. Peningkatan hasil belajar kognitif secara menyeluruh dari uji N-gain, peserta didik termasuk dalam kategori rendah yaitu 0,158. Berdasarkan hasil penelitian dapat disimpulkan bahwa hasil belajar fisika peserta didik kelas X IPA 2 SMA Negeri 2 Sukamaju mengalami peningkatan setelah diajar dengan metode pembelajaran eksperimen dengan LKPD Terstruktur.Kata kunci: Penelitian Pra Eksperimen, Penerapan Metode Pembelajaran Eksperimen dengan LKPD Terstruktur, Hasil Belajar, Data kuantitatifThis study aims to : ( 1 ) describe the results of studying the physics students of class X SMA Negeri 2 Sukamaju before and after application of the experimental method with LKPD Structured learning , and ( 2 ) to describe the physics learning outcome of students in class X SMA Negeri 2 Sukamaju after application experimental learning methods with Structured LKPD . The research is a pre - experimental study with a sample of the study population are students of class X IPA 2 SMA 2 Sukamaju the number of learners 36 . The study design used was one group pre-test post- test design . The results showed that there was an increase in student learning outcomes physics class X SMA Negeri 2 Sukamaju after application of experimental teaching methods to LKPD Structured with the pre-test scores obtained learners gain the maximum score of 15 and a minimum of 4 and at post-test maximum score gains students 19 and a minimum score of 5. Improving overall cognitive learning outcomes of the N -gain test , learners are included in the category of low at 0.158 . Based on the results of this study concluded that the results of studying the physics students of class X SMA IPA 2 2 Sukamaju increased after being taught to experiment with teaching methods Structured LKPD

Peningkatan Pemahaman Konsep Fisika Dengan Menggunakan Metode Penemuan Terbimbing Kelas Viib SMPN 8 Makassar

Penelitian ini bertujuan untuk meningkatkan pemahaman konsep fisika dengan metode penemuan terbimbing pada peserta didik kelas VIIB SMP Negeri 8 Makassar. Jenis penelitian ini adalah classroom action research (penelitian tindakan kelas) yang terdiri dari dua siklus dimana pada siklus pertama dilaksanakan sebanyak tiga kali pertemuan, dan pada siklus ke dua dilaksanakan sebanyak empat kali pertemuan. Subjek dalam penelitian ini adalah peserta didik kelas VIIB SMP Negeri 8 Makassar sebanyak 39 orang. Hasil penelitian menunjukkan bahwa pada siklus pertama yang tuntas secara klasikal dari 39 peserta didik hanya 25 peserta didik atau 64,10% yang memenuhi kriteria ketuntasan minimal (KKM). Secara individual belum terpenuhi karena nilai rata-rata diperoleh sebesar 71,38. Sedangkan pada siklus II dimana dari 39 peserta didik terdapat 30 orang atau 76,92% telah memenuhi KKM dan secara klasikal dan secara individual dengan skor rata-rata yang diperoleh sebesar 77,31. Berdasarkan hasil penelitian tersebut di atas, dapat disimpulkan pemahaman konsep fisika peserta didik kelas VIIB SMP Negeri 8 Makassar melalui penerapan metode penemuan terbimbing mengalami peningkatan.Kata kunci: pemahaman konsep, penemuan terbimbing, kkm, klasikal, skor rata-rataThis study aims to improve understanding of physics concepts with guided discovery method in class students of SMP Negeri VIIB 8 Makassar. This research was classroom action research (action research), which consists of two cycles in which the first cycle meetings held three times, and the cycle to two meetings held four times. Subjects in this study were VIIB class students of SMP Negeri 8 Makassar as many as 39 people. The results showed that in the first cycle is completed in the classical style of 39 students only 25 or 64.10% of learners who meet the minimum completeness criteria (KKM). Individual has not met since the average value obtained was 71.38. While in the second cycle of 39 learners where there are 30 people or 76.92% in compliance and in the classical KKM and individually with an average score of 77.31 earned. Based on the above results, it can be concluded understanding of physics concepts VIIB class students of SMP Negeri 8 Makassar through the application of guided discovery methods have increased

The role of amino acids in improvement in salt tolerance of crop plants

The present work has been performed to study the growth and metabolic activities of maize and broad bean plants which are shown to have a degree of sensitivity to salinity and to determine the role of amino acids proline or phenylalanine in increasing the salt tolerance of theses plants. Dry mass, water content, leaf area and photosynthetic pigment of maize and broad bean plants decreased with increasing salinity. These changes were accompanied with a drop in the contents of soluble sugars, soluble proteins and amino acids. This was accompanied by a marked increase in the proline content. When maize and broad bean plants sprayed with proline or phenylalanine the opposite effect was occurred, saccharides as well as proteins progressively increased at all sanitization levels and proline concentration significantly declined. Salinity significantly increased the sodium content in both shoots and roots of maize and broad bean plants, while a decline in the accumulation of K+, Ca++, Mg++ and P was observed. Amino acids treatments markedlyaltered the selectivity of Na+, K+, Ca++ and P in both maize and broad bean plants. Spraying with any of either proline orphenylalanine restricted Na+ uptake and enhanced the uptake of K+, K+/Na+ ratio, Ca++ and P selectivity in maize and broad bean plants

Upaya Meningkatkan Hasil Belajar Fisika Melalui Pemberian Tugas Terstruktur Disertai Umpan Balik Pada Model Pembelajaran Langsung Peserta Didik Kelas VIIA SMP Negeri 1 Bontonompo Kabupaten Gowa

Penelitian ini merupakan penelitian tindakan kelas yang bertujuan untuk mengetahui upaya pemberian tugas terstruktur disertai umpan Balik untuk meningkatkan hasil belajar peserta didik kelas VIIA SMP Negeri 1 Bontonompo. Subyek dari penelitian ini adalah 28 orang. Tindakan penelitian dilaksanakan dalam 2 siklus. Tindakan siklus I meliputi plan (perencanaan), action (tindakan), observation (observasi), dan reflection (refleksi). Tindakan siklus II merupakan tindak lanjut dan modifikasi dari siklus I. Kriteria keberhasilan adalah penguasaan konsep mencapai KKM yang ditetapkan yakni 70 secara individual dan 72% secara klasikal. Data hasil penelitian diperoleh dengan memberikan tes hasil belajar diakhir masing-masing siklus. Hasil penelitian dideskripsikan berdasarkan perolehan data penguasaan konsep berupa nilai hasil belajar setiap siklus. Nilai rata-rata penguasaan konsep meningkat dari 61,25 pada siklus I menjadi 75,71 pada siklus II dengan kata lain belum tuntas KKM pada siklus I menjadi tuntas KKM pada siklus II. Kesimpulan penelitian adalah upaya pemberian tugas terstruktur disertai umpan Balik pada model pembelajaran langsung dapat meningkatkan hasil belajar dalam pembelajaran fisika peserta didik kelas VIIA SMP Negeri Negeri 1 Bontonompo. Kata kunci : Penelitian tindakan kelas, tugas terstruktur, umpan Balik, hasil belajarThis research is classroom action research to know application of giving task assignment structurally with feedback on direct learning to improve learning results of students class VIIA SMP Negeri 1 Bontonompo. The subject of this research is 28 students. Action research conducted in two cycles. Action to cycle I are plan, action, observation, and reflection. Action to cycle II is a follow-up and modification of cycle I. Success criteria is the concept of achieving mastery KKM set is 70 individually and 72% classically. The results was obtained by giving final test in the end of every cycle. The results are described based on obtaining data by concept of achieving mastery that is result value study in every cycle. The average value of the concept of mastery increased from 6,25 in cycle I to 75,71 in cycle II with other words, the cycle I is not complete KKM to complete in cycle II. Research's conclusions are application of giving task assignment structurally with feedback on direct learning can enhance learning results in physics studying of students class VIIA SMP Negeri 1 Bontonomp

On the Production of π+π+\pi^+\pi^+ Pairs in pp Collisions at 0.8 GeV

Data accumulated recently for the exclusive measurement of the $pp\to pp\pi^+\pi^-$ reaction at a beam energy of 0.793 GeV using the COSY-TOF spectrometer have been analyzed with respect to possible events from the $pp \to nn\pi^+\pi^+$ reaction channel. The latter is expected to be the only $\pi\pi$ production channel, which contains no major contributions from resonance excitation close to threshold and hence should be a good testing ground for chiral dynamics in the $\pi\pi$ production process. No single event has been found, which meets all conditions for being a candidate for the $pp \to nn \pi^+\pi^+$ reaction. This gives an upper limit for the cross section of 0.16 $\mu$b (90% C.L.), which is more than an order of magnitude smaller than the cross sections of the other two-pion production channels at the same incident energy

On the SigmaN cusp in the pp -> pK+Lambda reaction

Measurements of the $pp \to pK^+\Lambda$ reaction at $T_p$ = 2.28 GeV have been carried out at COSY-TOF. In addition to the $\Lambda p$ FSI and $N^*$ resonance excitation effects a pronounced narrow structure is observed in the Dalitz plot and in its projection on the $p\Lambda$-invariant mass. The structure appears at the $pp \to$N$K^+\Sigma$ threshold and is interpreted as $\Sigma$N cusp effect. The observed width of 20 MeV/$c^2$ is substantially broader than anticipated from previous inclusive measurements. Angular distributions of this cusp structure are shown to be dissimilar to those in the residual $pK^+\Lambda$ channel, but similar to those observed in the $pK^+\Sigma^0$ channel