A Pedagogical Value From Mathematical Mistakes

A real correct and mistake basically have the same point. Mistake done by student during doing mathematics problem can have the positive values and worth to develop the new mathematics concept. In mathematics teaching, process to understand a concept sometimes will be easier if besides gave a lead real correct and also accompanied by the counter of example from looking the aspect of mathematics mistake good for student and to learn in developing values pedagogic such thinking critical, logical, analytical in exploring to born the new mathematics. We often dismiss a mistake as something to be avoided and at best to be corrected as soon as possible. Many types of algebraic mistakes and purely arithmetic ones and discusses how they can be channeled into positive, useful learning, and growing experience. Mathematical Mistake can be used as a springboard for developing new mathematics and can be use to turn negative experiences into positive ones. Key Words: Mathematical Mistake, Pedagogical Value

The Use Of Coastal Potency In Learning Mathematics To Enhance Social Skills Of Junior Secondary School Students

Social skills of junior secondary school students in coastal area are still considered low due to the lack of interaction in mathematics learning. Interaction in coastal class can be done by using coastal potency problem. The objective of this study is to enhance students’ social skills by using coastal potency in learning of mathematics (CCTL). Junior secondary school sample is randomly selected from 10 classes in SMPN 5 Kendari. Two classes are randomly selected from the school sample, experiment class (CCTL) and control class (conventional teaching and learning, CVTL). Instrument that was used in this research is scale of social skills. Data are analyzed by using a qualitative-descriptive technique, one-sample T test, and independent-sample T test. Based on the result of data analysis, it can be concluded that the use of CCTL is significantly better than CVTL in enhancing the students’ social skills, however it’s still in the medium category. Keywords: coastal potency, social skills, coastal potency-based contextual teaching and learning (CCTL

The Implementation Of Multiple Intelligences Based Learning To Improve Students’ Learning Activities, Response, And Learning Outcome In Mathematics

The fundamental basic theory of this study comes from Howard Gardner, who introduced a theory of human intelligence known as the Multiple Intelligences Theory. This theory concludes that there are eight types of intelligence which belongs to each person. The purpose of this study was to find out the implementation of multiple intelligences based learning to improve students’ learning activities, response, and learning outcome in mathematics. This research was conducted in SMP PGRI 1 Ciputat in academic Year 2009/2010. This research used Classroom Action Research, which consists of four stages research procedures were planning, action, observation, and reflection. The instruments of collecting data were using observation sheet activities, daily student journals, interview, and test. The result of the research revealed that the implementation of Multiple Intelligences based learning can enhance mathematics learning activities, giving a positive response towards mathematics and to improve student learning outcomes. Key Words: Multiple intelligences based learning, learning activities, response, learning outcom

Academic digital library in Malaysia: A case study on the status of digital reference services

This paper highlights the current status of digital library services provided by selected public academic libraries in Malaysia. The drift from traditional library to digital library architecture has set drastic changes in favor of adopting knowledge-gain mechanisms via the use of networked and digital environments. With diversity of functions, academic digital library is seen the most awaiting proxy in changing the information culture among academic users. This paper in general attempts to highlight the phenomena of using digital library system in public universities in Malaysia. The focal of the discussion is on digital reference services of academic digital library

A Model of Plant Identification System Using GLCM, Lacunarity And Shen Features

Recently, many approaches have been introduced by several researchers to identify plants. Now, applications of texture, shape, color and vein features are common practices. However, there are many possibilities of methods can be developed to improve the performance of such identification systems. Therefore, several experiments had been conducted in this research. As a result, a new novel approach by using combination of Gray-Level Co-occurrence Matrix, lacunarity and Shen features and a Bayesian classifier gives a better result compared to other plant identification systems. For comparison, this research used two kinds of several datasets that were usually used for testing the performance of each plant identification system. The results show that the system gives an accuracy rate of 97.19% when using the Flavia dataset and 95.00% when using the Foliage dataset and outperforms other approaches.Comment: 10 page

Development of a boost convertor for photovoltaic system MPPT using fuzzy logic control

Photovoltaic (PV) systems has received great attention in research for generating renewable energy due to its advantages over fossil based energy in terms of sustainability, environmental friendliness and price stability. However, the widespread use of PV meets several challenges such as increasing the efficiency of PV conversion. Another drawback of PV system is that it does not provide a constant energy source because its output power changes with temperature and irradiation or insulation. PV modules have unique current versus voltage characteristics. From the I-V characteristics, PV systems must be operated at a maximum power point (MPP) of specific current and voltage values so as to increase the PV efficiency. For any PV system, the output power can be increased by tracking the MPP of the PV module by using a controller connected to a boost converter. An important consideration in increasing the efficiency of PV systems is to operate the system near maximum power point (MPP) so as to obtain the approximately maximum power of PV array. To achieve maximum energy produced by a PV array, maximum power point tracking (MPPT) techniques are used. The position of the MPP is unknown but can be traced by using an MPPT To overcome this problem, Maximum Power Point Tracker DCDC Boost convertor are developed using Fuzzy Logic Control. The Fuzzy Logic Controller and the MPPT it self are being represented and implimented using Mathlab Simulink