scholarly journals Development and Students’ Perception on Teaching Aids of Photoelectric Effect Experiment Using Leds

2019 ◽  
Vol 7 (3) ◽  
pp. 253-261
Author(s):  
Hartono Bancong ◽  
Ana Dhiqfaini Sultan ◽  
Subaer Subaer ◽  
Muris Muris
Keyword(s):  
Cost Effective ◽  
Photoelectric Effect ◽  
High Price ◽  
Planck’S Constant ◽  
Teaching Aids ◽  
Modern Physics ◽  
User Friendly ◽  
Planck's Constant ◽  
D Model ◽  
Effect Experiment

The photoelectric effect experiment generally uses a very sophisticated and expensive apparatus. Some high schools and even universities in Indonesia cannot afford to conduct this experiment because of the high price of the apparatus. The purpose of this study was to develop a user-friendly, and cost-effective teaching aids which can be used to demonstrate the concepts of modern physics related to the photoelectric effect. The stages of this study employed the Four-D model, namely define, design, develop, and disseminate. Based on experts and practitioner evaluation, the developed teaching aids and practicum devices of photoelectric effect experiment were found to be valid and reliable. The results of the experiment by using this developed teaching aids of the photoelectric effect showed that there is a linear relationship between the stopping potential and the frequency of light emitted by the LED. These results are consistent with Millikan's experimental results, the first physicist who succeed in proving Einstein's hypothesis of the photoelectric effect, that in the photoelectric effect the stopping potential does not depend on the intensity of light but depends only on the frequency of light. In this study, the Planck’s constant value obtained is 6.408x10-34 J.s. Although this value is slightly smaller than the accepted value of Planck's constant that is 6.626x10-34 J.s, it is good enough considering the instrumental error occurred during the measurement of current and voltage. Furthermore, the students’ perception of the developed teaching aids and practicum devices of the photoelectric effects experiment are 74.9% (good) and 80.2% (very good), respectively. This indicates that the photoelectric effect experiment teaching aids and practicum devices that have been developed can be used to demonstrate and prove the concepts of modern physics related to the photoelectric phenomena correctly.Keywords: Teaching Aids, Photoelectric Effect, Students’ Perception

Farmers’ attitude to the effectiveness of ICTs Use in their Farming, Nay Pyi Taw, Myanmar

2020 ◽  
Vol 7 (11) ◽  
pp. 197-212
Author(s):  
Naing Kyi Win ◽  
Nyein Nyein Htwe
Keyword(s):  
Rural Communities ◽  
Cost Effective ◽  
Relevant Information ◽  
High Price ◽  
Personal Factors ◽  
Fm Radio ◽  
Access Cost ◽  
Ict Service ◽  
The Right ◽  
User Friendly

This study focused on farmers’ attitudes to the effectiveness of ICTs in their farming and farmers’ challenges in accessing it. Extension workers of the respective Townships identified the 144 sample farmers, and the data was collected through interviews using questionnaires during 2019.  There were frequency means and a dichotomous scale used to analyze the ICT attitude pattern among farmers and a 5-point Likert scale with the options.  This study explored the personal factors of ICT accessed farmers who are significantly getting young and middle age, high school, and graduate-level education and a moderate working experience compared with ICTs non- access farmers. 110 out of 144 farmers frequently used and accessed ICTs such as Radio, FM radio, TV, Facebook, Phone, and Agricultural Journals to obtain the agricultural information, but 34 farmers could not access ICTs due to the high cost, other social factors, and low ICT exposure. Most of the farmers received agricultural information from related Departments and Organizations traditionally, such as training, meeting, demonstration, trials, and conferences. More than half of the farmers were positively consistent agricultural information with their needs, but the rest did not meet their needs. Most farmers believed highly positive to agricultural information. However, some farmers responded negatively to agricultural details because they seem commonly knowledgeable information. Farmers mentioned in this study that more than half of farmers positively showed that attitude on high true and true regarding agricultural information. Moreover, farmers encountered insufficient electricity, challenging ICT exposure, low trust, and social problems. And also, farmers commonly faced challenges as high cost for ICT usage, high price for ICTs tools, and poor ICT service.  Besides, farmers’ other challenges were poor connectivity, inadequate support for the mother service provider, failure to attend the training, complexity to operate, and badly wanted news. Finally, this study recommended that farmers use effective utilization of ICTs in their farming in Nay Pyi Taw area that has the potential to make the rural communities prosperous as it enables the dissemination of required information in user-friendly patterns, easy to access, cost-effective ways at the right time with relevant information and training to be a skill.

Planck's constant and the photoelectric effect

1986 ◽  
Vol 21 (6) ◽  
pp. 377-378 ◽  
Author(s):  
N Morton ◽  
J Abraham
Keyword(s):  
Photoelectric Effect ◽  
Planck’S Constant ◽  
Planck's Constant

A Review of 21 iPad Applications for Augmentative and Alternative Communication Purposes

2012 ◽  
Vol 21 (2) ◽  
pp. 60-71 ◽  
Author(s):  
Ashley Alliano ◽  
Kimberly Herriger ◽  
Anthony D. Koutsoftas ◽  
Theresa E. Bartolotta
Keyword(s):  
Augmentative And Alternative Communication ◽  
Cost Effective ◽  
Alternative Form ◽  
Alternative Communication ◽  
Text To Speech ◽  
Reference Guide ◽  
Expressive Communication ◽  
Communication Needs ◽  
User Friendly ◽  
Ipad Applications

Abstract Using the iPad tablet for Augmentative and Alternative Communication (AAC) purposes can facilitate many communicative needs, is cost-effective, and is socially acceptable. Many individuals with communication difficulties can use iPad applications (apps) to augment communication, provide an alternative form of communication, or target receptive and expressive language goals. In this paper, we will review a collection of iPad apps that can be used to address a variety of receptive and expressive communication needs. Based on recommendations from Gosnell, Costello, and Shane (2011), we describe the features of 21 apps that can serve as a reference guide for speech-language pathologists. We systematically identified 21 apps that use symbols only, symbols and text-to-speech, and text-to-speech only. We provide descriptions of the purpose of each app, along with the following feature descriptions: speech settings, representation, display, feedback features, rate enhancement, access, motor competencies, and cost. In this review, we describe these apps and how individuals with complex communication needs can use them for a variety of communication purposes and to target a variety of treatment goals. We present information in a user-friendly table format that clinicians can use as a reference guide.

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