Implementasi Asesmen dalam Melihat Kebutuhan Anak Berkebutuhan Kusus di TK LB C1 Dharma Rena Ring Putra I YOGYAKARTA

In the context of education for students with disability, Assessment is functioned to measure the capability and difficulty of students in learning as a tool to determine what the students need in their learning process. In other words, assessment is used to know and determine where the problems of students faced and what the necessities of students to support their learning process. This research has purposed to express the Implementation of Assessment of special education (SLB) Teacher and The Cooperation of Teacher with Outsiders. The result of this research showed that there are two aspects of the implementation of teacher's assessment. The first aspect is from their limitations, and the second aspect is from the ability to understand the material in the class. Therefore, the effort in improving the capability of students is very needed the cooperation with outsiders, such as the specialist teacher, student guardian or parents

Teacher Training Scaffolding Type to Improve Teacher’s Ability in Development of Guided Inquiry Practical Worksheet

Generally teacher training is still ineffective, and there are still many weaknesses in its implementation. The main objective of teacher training is to improve the ability and skills in learning process, so as to prepare students for competition in the millennial century. In chemistry learning teachers must be able to stimulate all initiatives, creativity and scientific attitudes through guided inquiry-based laboratory activities. The purpose of this study was to measure the effectiveness of teacher training in improving the ability to develop guided inquiry lab worksheets to achieve students’ understanding and literacy. The training involved 26 chemistry teachers who teach in Karawang West Java. The method applied in this study is multi-method, both quantitative and qualitative with multi-design. The results achieved in this study indicate that the teacher’s response to training materials and training methods is very strong based on the results of the pretest and posttest. Increased ability of teachers in inquiry is classified as medium category. In general, the teacher’s response to the training showed a very positive response especially to the topic of practical evaluation or evaluation. Some teachers demonstrated their ability to design guided inquiry-based lab worksheets mainly related to contextual phenomena, including the effect of vinegar acid concentration on baking soda decomposition reactions, and the effect of fertilizer concentrations on grain sprout growth Teacher training is still a project that many considered as not effective and has a number of shortcomings. Learning should prepare students according to the demands of the 21st century. So that the learning process of chemistry should stimulate initiative, creativity, and scientific attitude through Guided-Inquiry based laboratory activity to improve student literacy ability. The objective of this research is to measure the effectiveness of teacher training in improving the production ability of Guided-inquiry Labs to achieve students’ understanding and literacy. The training involved 26 chemistry teachers as trainees, a mixed method chosen to measure the quantitative side by preexperimental design with a pretest-posttest design, one-group design and teacher feedback collection on training through questionnaires. The pretest and posttest results were calculated by measuring N-gain, and scoring teacher responses on a scale of 1-4. The results of questionnaire showed that the teachers responded with strong criteria and very strong, with an average of 83 (Very Strong). Increased ability of participants is shown with N-gain obtained by each teacher. The average N-gain of trainees is 0.71 in the medium category. Aspects of analyzing the curriculum have the smallest N-gain value compare to the aspects of composing the referring questions and aspects of presenting the experimental data in the form of tables/graphs. In general, teachers’ responses to training show very strong categories with the highest responses on the topic of practicum assessment. And the ability of teachers in designing guided-inquiry self-study worksheets has improved especially for aspects of curriculum analysis and presenting experimental data in the form of tables/graphs. The development of teachers’ skills through measurable training that focused on improving teacher competence should be more frequent. The selection of materials that are urgently needed and used in the learning process should also be considered.     Keywords: guided inquiry, LKS, rate of reaction, student worksheet, scientific literacy, training, scaffoldin

HAMBATAN BELAJAR SISWA PADA PEMBELAJARAN MATEMATIKA MATERI PECAHAN DI KELAS V SEKOLAH DASAR

Makna konsep matematis khususnya penjumlahan dan pengurangan pecahan dikontruksi melalui proses yang melibatkan pengalaman belajar. Namun, hal tersebut belum sepenuhnya menjamin pemahaman yang baik pada siswa. Proses kontruksi tersebut dapat dilatarbelakangadanya kesenjangan konsepsi pada saat pembelajaran. Penelitian ini bertujuan untuk menelusuri kemungkinan adanya hambatan belajar atau learning obstacles pada materi pecahan khususnya pada operasi hitung penjumlahan dan pengurangan pecahan berdasarkan pemaknaan dan pembelajaran (pengalaman belajar) dalam memperoleh pemaknaan. Penelitian ini menggunakan metode kualitatif dengan jenis fenomenologi hermeneutik yang melibatkan siswa SD kelas V, guru matematika dan matematikawan. Pengumpulan data dilakukan secara triangulasi dengan menggunakan instrumen, yaitu tes tertulis yang diberikan kepada siswa dan wawancara kepada setiap partisipan. Analisis data dilakukan secara deskriptif yang secara umum dengan mereduksi data, menyajikan data, dan menarik kesimpulan. Temuan dan pembahasan pada penelitian ini adalah adanya inkonsistensi pemaknaan konsep pecahan, pemaknaan penjumlahan dan pengurangan pecahan, dan pemaknaan penjumlahan dan pengurangan pecahan dalam konteks keseharian. Pengalaman belajar siswa yang terungkap menunjukkan bahwa siswa memperoleh pemaknaan cenderung berasal dari guru, buku dan sumber lain. Berdasarkan pemaknaan dan pengalaman belajar dalam memperoleh pemaknaan, dapat disimpulkan bahwa secara umum terdapat hambatan belajar yang bersifat ontogenik, epistemologi dan didaktis pada penjumlahan dan pengurangan pecahan. Temuan tersebut dapat menjadi pertimbangan untuk pengembangan desain didaktis pada materi pecahan khususnya operasi hitung penjumlahan dan pengurangan. The meaning of the concept mathematical specifically on the addition and subtraction of the fractions is constructed through a process which involves a learning experience. But, it was no guarantee if the construction has a good impact on the student’s understanding. The contruction process was based on zone of concept image differencies of learning. This research was designed as a qualitative study with the type of phenomenology hermeneutics, which involves the elementary students of Grade V, mathematics teacher, and mathematician. The data were collected through the process of triangulation through a writing test (Respondent Ability Test) and interview as the research instrument. Data analysis was performed descriptively in general by reducing data, presenting data, and drawing conclusions. The findings showed that there is an inconsistency in understanding the meaning of the concept of fractions, the concept of addition and subtraction of fractions, and the addition and subtraction in daily context. The learning experience showed that the meaning of the fraction concept mostly came from teachers, textbooks, and various sources. Based on the findings, it can be concluded that in general there is a learning obstacles on the concept of on the addition and subtraction of the fractions which includes ontogenic obstacles, obstacles epistemological and didactical obstacles. These findings can be a consideration for developing didactic design of the teaching materials on fractions, especially in terms of the addition and the subtraction of the fractions

Characterization and modelling optimization on methanation activity using Box-Behnken design through cerium doped catalysts

Catalytic methanation reaction has been a promising technique for the conversion of CO2 to valuable fuel product, CH4 and thus reduces the emission of CO2 to the environment. Many catalysts have been investigated by this method yet some carbon depositions have occurred during reaction which leading to low conversion rate of CO2 to CH4. Therefore, cerium catalyst has been applied in this study for the investigation of catalytic activity utilizing response surface methodology (RSM) method (Box-Behnken Design) in order to achieve the highest CO2 conversion. The potential trimetallic oxide catalyst of Ru/Mn/Ce (5:35:60)/Al2O3 was chosen and the experimental parameters used were calcination temperature of 600–800 °C, ratio based loadings of 60–80 wt%, and catalyst dosage of 3–7 g with CO2 conversion to CH4 as a respond. The RSM optimum parameter of calcination temperature of 697.47 °C, ratio of 60.38% and catalyst dosage 6.94 g was tested. At these conditions, the results were verified experimentally (99.98% CO2 conversion), which was accurately close to the predicted value (100% CO2 conversion). Ru/Mn/Ce (5:35:60)/Al2O3 catalyst revealed the active species of CeO2 in XRD analysis with oxidation state Ce 4+ as supported by ESR analysis. When the calcination temperature was increased, the surface area decreases as observed in nitrogen adsorption supported with larger particle size as shown in FESEM. The reducibility of cerium catalyst was started at lower temperature

Implementation of ID3 algorithm classification using webbased weka

The Bangil District Court is an IB class court that handles a large number of case cases. Every year more and more case cases are included in the Bangil District Court, but not all case cases are in a mutation status. By using classification techniques that can process large amounts of data to find patterns that occur in case data. Data processing is used to predict case minutation with the decision tree method using ID3 algorithm. Case data has 8 attributes and has been classified into 6 parts, namely division based on Case Type, Register, Case Classification, Length of Process, Public Prosecutor and Decision with a goal of Mutation Status. Weka 3.6 is an API that is used to build rules / rule bases. The rule that was formed was then implemented in the making of a case status prediction application in the web-based Bangil District Court

ESTIMASI BATIMETRI DARI DATA SPOT 7 STUDI KASUS PERAIRAN GILI MATRA NUSA TENGGARA BARAT

Indonesia merupakan negara kepulauan dengan ribuan pulau besar dan kecil yang memliki perairan laut dangkal. Salah satu informasi yang dibutuhkan dari pulau-pulau tersebut adalah peta batimetri khususnya diperairan laut dangkal. Informasi tersebut masih sangat terbatas pada skala yang besar untuk skala yang lebih detil masih sangat terbatas. Untuk menyelesaikan permasalahan tersebut dibutuhkan teknogi penginderaan jauh. Salah satu pemanfaatan teknologi penginderaan jauh adalah untuk menghasilkan informasi batimetri. Banyak metode yang dapat digunakan untuk menghasilkan informasi batimetri dengan teknologi tersebut. Metode yang digunakan dalam penelitian ini adalah metode regresi linier berganda (MLR) yang dikembangkan oleh Lyzenga, 2006. Data yang akan di gunakan adalah citra satelit SPOT 7 di Perairan Laut Dangkal Gili Trawangan, Gili Meno dan Gili Air Pulau Lombok Provinsi Nusa Tenggara Barat. Metode penentuan batimetri tersebut dilakukan pada data kedalaman insitu dengan melakukan dua modifikasi yaitu yang pertama dengan tidak memperhatikan jenis objek habitat dasar dan yang kedua memperhatikan objek habitat dasar karang, lamun, makroalga dan substrat.Hasil dari penelitian ini memberikan korelasi R2 yang meningkat dari 0,721 menjadi 0,786 serta penuruanan nilai kesalahan RMSE dari 3,3 meter menjadi 2,9 meter