The misconception in mastering physics concepts occurs in basic physics and is also found in advanced physics, such as Modern Physics or Quantum Physics. Efforts to remediate misconceptions have been done manually or offline but are often constrained at too long an interval between identification activities and remediation actions. Through the advancement of online learning systems, E-learning media, these obstacles can easily be overcome. This article will discuss one way of remediation using Moodle-based E-Learning modules. A total of 2 classes (45 students) were randomly selected for the experimental group and two classes (64 students) for the control group. The experimental group used a representative module based on E-Learning as a remediation treatment, while the control group used a conventional module. The results of the validation of the material and the design of the E-Learning modules were obtained as very feasible to use. Data collection uses a two-tier Modern Physic Diagnostic Test or MPDT (Modern Physic Diagnostic Test) of 30 items combined with the CRI (Certainty of Response Index) index. It is carried out twice, namely before and after treatment. The N-Gain normality analysis results showed the percentage of misconception reduction was more significant in the experimental group than in the control group. Important note obtained by implementing E-Learning is more appropriate to be used simultaneously between conventional face-to-face and E-Learning.
ABSTRACT. Asam sunti is a popular traditional product commonly used as a condiment in Aceh. It is a fermented and popular product, wich has an important economic role in Aceh rural community. However, this traditional dried condiment is mostly poor in appearance, calour and keeping qualities. The research is aimed to study curing, drying and fermentation processes for improvement of quality and shelf life of the product. The result indicated that curing by salting prior drying was better than traditional curing by salting after drying. Likewise mechanical drying was also better than traditional sun drying. Both better processes could improve calour, lower mouisture content, lessen sournes and improve shelf life. The chemical composition of the fresh fruits with pH at 2.44 and mouisture content 70.16% in asam sunti with PH at 1.72. Bacterial plate count of the treated as well as the traditional product (as control) revealed very stable product and no bacterial content, wich account of very low PH (1.7) and water activity (0.70 – 087) condition for bacterial growth.
Problem-solving in the Quantum Physics course which requires a very mathematical description and analysis is considered difficult by students, especially if the learning is done online. This study aims to find out the difficulties of learning Quantum Physics courses through online learning for physics education students in class 2018 FKIP USK. The subjects in this study were students of physics education class 2018 who took the Quantum Physics course, totaling 49 people. The research approach used is descriptive quantitative. Data collection was carried out using a closed questionnaire based on the google form. The results showed that students had learning difficulties using online learning in the Quantum Physics course from internal factors, namely cognitive indicators with a total score of 841 while external factors, namely community environmental indicators, with a total score of 457. Conclusions Based on the difficulties experienced by students in this study, it can be seen that students have some difficulties in studying Quantum Physics material online.
This paper is a result of research concerning hydrological characteristic in the Garang Catchment Area. At present tha catchment area is often facing the problem of flooding in the dense populated area with cause a lot of loos in Semarang City. This research is aimed at studying hydrological harateristic in the Garang Catchment Area. Hydrological data are obtain from direct measurement at the stream gauging stations in the Garang Catchment Area and collected from Balai Hidrologi Office at Pusat Litbang Teknologi Sumber Daya Air in Bandung and from Hydrological Unit of Central Java Province. From this research were known the rainfall depth, their distribution and their return period; runoff coefficient; streamflow volume; dependable flow; flood discharge characteristi; and minimum discharge. From the some occuring flood indicates of the runoff coefficient is about 0.70. The water volume wasted to the sea is about 195 million m3/year. Yearly average of the dependable flow at stream gaunging stations: Garang – Pajangan is about 2.28 m3/sec; Garang – Patemon is about 0.92 m3/sec and Kreo – Pancur is about 1.26 m3/sec. Yearly mean of annual flood discharge at Garang – Pajangan is about 435 m3/sec. The maximum capacity of river channel is about 485 m3/sec. The flood discharge characteristic are as follows: time of travel of flood is generally one km/hour approximately, rising time is about 3 hours and time of recession is about 6 – 11 hours. The floods, they are generally occur at the night. Flush flood of 1022 m3/sec occured on January 26, 1990 is estimated on 50 year return period, with 15 year return period of rainfall. The range of minimum discharge is about 0.43 – 3.15 m3/sec. The maximum discharge is about 47.2 – 1118 times of the minimum discharge. Design of the dam in Kreo River at Jatibarang and Kripik River at Mundingan, also increasing of the reforestation area in the upstream catchment are an alternative to reduce the Garang River peak flood.
Based on the observations that had been made, students experienced some difficulties in solving physics problems, especially in multiple representations. They had a problem in applying a concept with a different form of representation from the previous representation. To overcome this, it is necessary to apply what's another way method as solving problem solution. This study aims to analyze the student’s difficulties in solving physics problems with multiple representations using what's another way method on heat and temperature topics in a private islamic senior high school located in Banda Aceh. The design of this study was qualitative descriptive research with five students as subjects. The instruments used were test questions and interviews, then the results of the data were analyzed using what's another way method. The results showed that all students experienced difficulties at level II (planning problem solving), level III (problem solving), level IV (re-checking), and level V (reflection), while for difficulty level I, namely understanding the problem, it is found that no one face the problem. Therefore, the difficulties of students can be grouped into indicators of difficulty in applying the principles and difficulties in solving verbal problems. The factors cause these difficulties may occur due to error in using formulas, error in mathematical calculations, error in unit conversions, error in symbols writing , and error in double-checking.
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