scholarly journals UPAYA MENINGKATKAN PEMAHAMAN KONSEP SISWA PADA MATA PELAJARAN MATEMATIKA MELALUI MODEL PROBLEM POSING PADA SISWA DI SEKOLAH DASAR

2018 ◽  
Vol 2 (2) ◽  
pp. 155
Author(s):  
Arrahim Arrahim ◽  
Amelia Nur Fatimah

This research is motivated by the lack of understanding the concept of students in teaching math. This is evident from the students have not been able to explain the return of the material provided by the teacher, classify an object of such material in accordance with the properties that exist on the material, providing an example of what has been described, presents a picture that relates to the material, students are still difficulties in explains the necessary condition on the content being taught, to solve problems by using the steps correctly, solving the problem solving has been explained by the teacher. The purpose of this study is to improve students' understanding of concepts through learning model Problem Posing in Class VI SDI-Huda AL East Bekasi.Type of this research is the Classroom Action Research (PTK) and lasts for two cycles. Each cycle consisted of four meetings, with the stages of planning, implementation, observation, and reflection. Subjects in this study were students of class VI SDI-Huda AL East Bekasi with the number of students 23 students consisting of 9 male students and 14 female students. The data were obtained by tess and observation. Data were analyzed by descriptive qualitative and quantitative descriptive. The criteria for this research kerberhasilan is when 80% of the number of students reaching the KKM is 75.From the results obtained by the average value of the ability of understanding the concept of students in the first cycle of 75.28 with a percentage of 60.87% success. then in the second cycle The mean value of understanding the concept of students' ability to increase to 90.11 and 86.96% success rate. This shows that there is an increased understanding of the concept of the student after the model of Problem Posing. It can be concluded that the use of the model can be meningkatlkan Problem Posing student conceptual understanding in mathematics students of class VI SDI-Huda AL East Bekasi.

2019 ◽  
Vol 2 (3) ◽  
Author(s):  
Kartiani Dewi ◽  
Suryani S ◽  
Ahmad Yamin

Lecturers are responsible for implementing the three main responsibilities in university (Tridharma Perguruan Tinggi) with 12 credits to 16 credits each semester. However, many lecturers feel that the workload is very excessive. The purpose of this study was to describe the mental workload of lecturers at the Faculty of X Padjadjaran University. The method of this research was quantitative descriptive by using a total sampling technique involving 43 lecturers. Data collection used NASA-TLX instruments. Data were analysed using descriptive statistics. The results of the study showed that overall the mental workload of the Faculty of X Padjadjaran University lecturers was included in the high category both in education and teaching assignments (74.4%), research assignments (76.7%), and community service assignments (74.4%). ) Effort dimensions have the highest mean value that is equal to 51.8, while the dimensions that have the lowest mean are Perfomance dimension, namely 9.4, where the greater the mean dimension shows the large contribution in the mental workload felt by the lecturer. The conclusions, this study show that most lecturers have a high mental workload. It is suggested that the lecturers need to have balance numbers of tasks according to their abilities, balance the time working with recreation, and meet the needs of rest. The results of this study need to be followed up by examining methods or efforts that can reduce the lecturers' mental workload.


2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Filsya Khoirina Fildzah ◽  
Ahmad Yamin ◽  
Sri Hendrawati

The purpose of this research was to identified the behavior of mothers in the prevention of stunting on under two years baby in Cipacing Village, Jatinangor, Sumedang District. This research used quantitative descriptive methods. The population of this study was the mother who had a baby 0-2 years in Cipacing Village, Jatinangor, Sumedang District. The samples in this study were 218 people using proportional stratified random sampling. The data were collected using a likert scale  questionnaire, analyzed using frequency distribution based on the mean value, then presented in proportion form. The results showed the behavior of mothers in the stunting prevention of 53.07% had good category on stunting prevention behavior, with the highest result was drinking water and household food management sub variable with 74.3% with good categories and the lowest was the hand washing with soap sub variable with a bad behavior category of 55%. The advice for Public Health Center Institution was beside in terms of facilities but also should have a target in improving the behavior of mothers in stunting prevention through STBM-Stunting programs.


2021 ◽  
Vol 11 (19) ◽  
pp. 8880
Author(s):  
Bowen Guan ◽  
Cunbo Fan ◽  
Ning An ◽  
Ricardo Cesar Podesta ◽  
Dra Ana Pacheco ◽  
...  

As one of the major error sources, satellite signature effect should be reduced or even erased from the distribution of the post-fit residuals to improve the ranging precision. A simulation of satellite signature effect removal process for normal point algorithm is conducted based on a revised model of satellite response, which fully considers the structural and distribution characteristics of retroreflectors. In order to eliminate both long-term and short-term satellite signature effect, a clipping method for SLR data processing is proposed by defining the clipping location as 5.6 mm away from the mean value of the long-term fit residuals to select effective returns for normal points. The results indicate that, compared to normal points algorithm, the RMS per NP of LAGEOS-1 observation data processed by the clipping method is reduced from 62.90 ± 9.9 mm to 56.07 ± 4.69 mm, and the stability of RMS is improved 53%. This study improves the satellite signature effect model and simulates the fluctuation of normal points caused by satellite signature effect for the first time. The new method based on the simulation of satellite signature effect has stronger robustness and applicability, which can further minimize the influence of satellite signature effect on the SLR production and significantly improve the data property.


Author(s):  
Yusuf Nasirudin ◽  
Dewa Putu Gde Purwa Samatra ◽  
Wahyuddin ◽  
Susy Purnawati ◽  
Ni Made Linawati ◽  
...  

In the game of futsal, work of postural muscle balance needed to maintain the stability of the body for receiving the pass and put the ball into the other team's goal at the time of attack, changing the direction of movement quickly when returning to their respective positions and avoid of back disorder. This research is a form of experimental research that will test the effectiveness of the provision of trunk balance exercise is better than the strengthening of back exercises to improve muscle work balance of erector spine on futsal beginner players, in this study sample will be divided into two groups, the first group will be given trunk balance exercise to improve balance of erectorspine muscles work in futsal begginer players, the second group will be given back strengthening exercise to improve balance of erectorspine muscles work in futsal begginer players.This study was conducted for 6 weeks and the intervention performed 18 times during the study period. Samples measured by surface electromyography to measure work of right and left erector muscle by calculating the proportion of the work on the muscle, the measurement is performed at before the intervention and then intervention in accordance with the grouping which has been divided and then after completion of the intervention, the samples will be re-measured to obtain the value of the intervention.The results of the first group who has been given of trunk balance exercise shows the average value of the before treatment (83.82 ± 2.94) % and the mean value of the after treatment (96.74 ± 2.39) %, and in the second group who has been given strengthening back exercise shows the mean value of the before treatment (88.29 ± 1.89) % and the mean value after treatment (95.91 ± 1.75) %, with the probability value of both groups is 0.000 (p <0.05), and can be expressed there is a significant difference between both groups. In the fourth hypothesis test conducted comparative results of both groups, using independent samples t-test using mean value of the first and second groups, in the first group (12.92 ± 2.94) %, and the second group (7.61 ± 2.12) %, with a probability value 0.000 (p<0.05) and can be expressed in statistical analysis is no significant difference between both treatments were carried out and that means, giving trunk balance exercise is better than back strengthening exercise to improve balance of erector spine muscles work on futsal beginner players.


1959 ◽  
Vol 6 (2) ◽  
pp. 261-271 ◽  
Author(s):  
A. A. Townsend

To determine experimentally the mean value of a randomly fluctuating quantity, it may be necessary to measure the average value over a considerable interval of time. This problem arose in a recent study of the temperature fluctuations over a heated horizontal plate, and a system was used that depended on the counting of electrical pulses generated at a rate proportional to the quantity being measured. The advantage of this technique is that mean values may be measured over time intervals of almost unlimited length with little added difficulty for the experimenter. Circuits are described which measure: (a) the mean square of a fluctuating quantity and of its time-derivative, (b) the statistical distribution of the fluctuations, (c) the mean frequency of the fluctuation assuming a particular value, and (d) the mean product of two fluctuating quantities. Over the range of use, the stability and linearity of the calibrations is better than 1%, more than sufficient for work on natural convection. In its present form, the equipment responds uniformly to all frequencies below 100 c/s, but it would not be difficult to extend this range of response to higher frequencies.


2014 ◽  
Vol 51 (01) ◽  
pp. 152-161 ◽  
Author(s):  
Leandro P. R. Pimentel

In this short article we will provide a sufficient and necessary condition to have uniqueness of the location of the maximum of a stochastic process over an interval. The result will also express the mean value of the location in terms of the derivative of the expectation of the maximum of a linear perturbation of the underlying process. As an application, we will consider a Brownian motion with variable drift. The ideas behind the method of proof will also be useful to study the location of the maximum, over the real line, of a two-sided Brownian motion minus a parabola and of a stationary process minus a parabola.


2019 ◽  
Author(s):  
Eko Prasetyo

The research aims to measure the effect of entrepreneurial self-efficacy (ESE), entrepreneurial attitude (EA), and entrepreneurial intention (EI) towards entrepreneurship education. The research subjects were all students of SMK Negeri Tempursari. Research conducted is a population study with a total of 187 students. The research instrument used a questionnaire. Data analysis used the MANOVA technique. The results of the study were: (1) The mean value of the ESE, EA, and EI of students who have received entrepreneurship education is higher when compared to the average value of students who have not received entrepreneurship education; and (2) EA and EI have no significant effect between students who have received entrepreneurship education and students who have not received entrepreneurship education. While in the ESE aspect there is a significant influence between students who have received entrepreneurship education and students who have not received entrepreneurship education.


TAMAN VOKASI ◽  
2017 ◽  
Vol 5 (1) ◽  
pp. 56
Author(s):  
Sandi Sanjaya ◽  
Suparmin Suparmin

The objection of this study is to increase the level of interest and learning achievement about calculation of construction machinery subjects in the 11th grade of mechanical class of PIRI Sleman Vocational High School through the Lectora Inspire learning media. The type of this research is classroom action research. This research was conducted in two cycles. The research subject is mechanical class of PIRI Sleman Vocational High School, which includes fifteen male students. The data collection method is using the evaluation data which is collected through the learning achievement test, Beside that, the research is used to know the students interest in learning subjects Construction Engineering Calculations using a questionnaire. Data analysis method used is a comparative technique that compares the results of pre-test and post-test. The result showed that by using the Lectora Inspire learning media, the level of interests and learning achievement about calculation of construction machinery subjects in the 11th grade of mechanical class of PIRI Sleman Vocational High School was increased. In the first cycle, students interest reached about 64.87%, which is included in the high criteria. The initial competency of the subject obtained from the pre-test showing that there are three or 20% students have fulfilled the minimum achievement criteria, while twelve students or 80% students haven’t fulfilled it yet. The enhancement of student achievement in the first cycle, who passed the minimum achievement criteria is ten students with a percentage of 66.67% or the mean value is 75.07. For the second cycle of post test result showed the students who reached 75 point is thirteen students with a percentage of 86.67% or the mean value is 75.07. Overall, the interest level for study calculations of construction machinery in mechanical class of PIRI Sleman Vocational High School increased by 66.67%.


Author(s):  
Lena Susianti ◽  
Muhammad Anwar

This research was conducted to determine the effect of brainstorming strategies on students' creative thinking skills in workshop work subjects and technical drawing of class X students of Electronic Engineering at SMKN 1 Bukittinggi. The research design in this study is quasi-experimental. The instrument used was in the form of a matter of creative thinking skills tests that had been validated by an Expert, namely a lecturer majoring in Electronics Engineering. Validity test obtained the average value of validity of 0.85 which is in the valid category. Reliability test obtained Alpha Cronbach's value of 0.856 which is in the interpretation of the value of the pair very well. Because the questions are valid and reliable, the matter of creative thinking skills can be used. The results found the mean value in the experimental class (X TE1) 87.5 and the average value of the control class (X TE2) 74.0. After t-test, it was obtained that tcount> ttable so that Ha was accepted and Ho was rejected. It can be concluded that there is a significant influence on the application of brainstorming strategies to creative thinking skills.          Keywords: Creative Thinking Skills, Brainstorming Strategies, Validity, Reliability


2021 ◽  
Vol 1 ◽  
pp. 1486-1493
Author(s):  
Fikri Haykal ◽  
Sigit Prasojo ◽  
I Isytiaroh

AbstractStroke is a neurological disorder which is has become the main factor in causing movement and body function disorder ini adults. The Problem occur freqentely in the patient in the balence disoreders ini accrying out activities and stiffness in the estremities. One of the physiotherapy apptoaches in by applying bobath method in impove the static balance. It aims to analyze the effect of bobath method exercise therapy on static balance in stroke patients from many articles. in this study the writer had scarched some articels via  PubMed adn  Google Scholar articles according to inclusion and exclusion criteria which are then reviewed. From that analyzed articles. It got the mean value pre intervenstion and after it. the average value in the treatment group before the intervention was given was 14.403 and after being given the intervention was 16.593, the obtained velue was 0.007. These results show the intervention bobath method can improve the ability of static balance in stroke patients. The method in proven can improve standing balance in stroke patients. So that it is highly recomended to implement this method as the physiotherapy intervention expesially in stroke patient based on the cometence.Keywords: Stroke; bobath method; static balance AbstrakStroke adalah gangguan neurologis yang menjadi faktor paling utama penyebab gangguan gerak dan fungsi tubuh pada orang dewasa. Permasalahan pada pasien stroke antara lain adanya gangguan keseimbangan dalam melakukan aktifitas dan kekakuan dalam ektremitas. Salah satu pendekatan fisioterapi untuk meningkatkan keseimbangan statis adalah metode bobath. Study ini bertujuan untuk menganalisa pengaruh terapi latihan metode bobath terhadap keseimbangan statis pada pasien stroke berdasarkan dari berbagai artikel. Pencarian artikel melalui PubMed dan Google Scholar Articles untuk menemukan artikel sesuai kriteria inklusi dan eksklusi yang kemudian dilakukan review. Dari hasil artikel yang dianalisa nilai mean sebelum diberikan intervensi didapatkan rata – rata 14.403 dan sesudah diberikan intervensi sebesar 16,593. Hasil p velue sebesar 0,007. Hasil tersebut menunjukan bahwa intervensi metode bobath  dapat meningkatkan kemampuan keseimbangan statis pada pasien stroke. Metode bobath dapat meningkatkan keseimbangan berdiri pada pasien stroke. Metode bobath dapat digunakan sebagai intervensi fisioterapi khususnya pasien stroke sesuai dengan kompetensi.Kata kunci: Stroke; metode bobath; keseimbangan statis


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