• Journal of The Korean Association of Information Education
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• v.21 no.4
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• pp.371-380
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• 2017

SW education is considered important in the present age where various sciences converge. According to this tendency, SW education was included in the regular education course in Korea, which aims to develop the learner's CT. Therefore, researches on CT and educational tools are being activated. App Inventor is a simple app development tool that has many advantages over traditional tools. In this study, we developed and applied a SW instruction program that uses an App Inventor to develop CT for elementary school students. Moreover, CT was classified into two elements-calculative perception and calculative creativity- and performed tests after applying SW instruction programs. Furthermore, attitude towards computer were classified into three elements-c computer anxiety, computer preference, and computer confidence- and conducted tests. After performing paired t-test pretest-posttest matching samples on test outcomes, it was found that the CT of the learners who applied the program was increased, and the attitude towards computer also showed a positive change.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.2
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• pp.51-58
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• 2016

The importance of SW education is being stressed recent days, and the App Inventor is getting attention as a tool of SW education. In this study, I have developed an app Inventor instruction model, which is based on the Design Based Learning and integrated with elements of computational thinking. And I taught the student to apply this model. and then analyzed the app production process and the changes of student. In developing the app, students defined the problem and made a plan to resolve them. And this student had have a sense of accomplishment and self-confidence through practical experience to implement it in their own source code.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.235-238
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• 2016

디지털 콘텐츠의 한 형태로 볼 수 있는 앱은 개발자들의 창의적 사고를 바탕으로 현재도 무수히 쏟아져 나오고 있으며, 많은 사용자로부터 선택되어 활용되고 있다. 이러한 변화는 교육분야에도 영향을 주어 앱을 활용한 교육환경과 교육방법에 대한 다양한 연구가 현재 진행되고 있다. 앱과 같은 디지털 콘텐츠의 개발은 창의적 아이디어를 기반으로 구현되며 이는 콘텐츠 사용자의 유용성과 경제적 가치를 결정하는데 중요한 요소로 작용하고 있다. 이러한 창의와 디지털 기술을 접목한 앱 프로그래밍 교육은 학생들의 창의적 사고와 문제해결력을 향상시키는데 중요한 역할을 하며 특히 교육용 프로그래밍 언어(EPL, Educational Programming Language)를 활용한 코딩 교육과 창의적 문제해결력 향상에 관한 관련 연구들이 활성화되고 있는 실정이다. 본 연구에서는 이러한 EPL을 바탕으로 비IT계열 전공의 대학생들에게 프로그래밍 교육을 실시하고 창의적 사고를 통해 디지털 콘텐츠인 앱을 제작하는 것에 초점을 두기 위한 안드로이드 앱제작 교육 프로그램 개발을 진행하였다. EPL을 위한 도구는 MIT 미디어랩에서 개발한 클라우드 기반의 안드로이드용 앱 인벤터2(App Inventor 2)를 사용하며, 제작한 앱을 스마트 기기에서 즉시 실행하고 확인할 수 있다는데 대해 학습만족도와 성취감이 높음을 수업관찰을 통해 확인할 수 있었으며 제작 과정에서도 활발한 사고력를 발휘하는 것을 확인할 수 있었다.

• The Journal of Korean Association of Computer Education
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• v.18 no.2
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• pp.1-9
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• 2015

Excessive cognitive burdens caused by learning grammar should be reduced to cultivate high-level thinking skills in students through programing education. To this end, various educational programing languages have been developed. In recent years, block-based App Inventor that can used in real life have been introduced. This study intends to suggest an educational environment in which programing can be utilized as a leading problem solving tool by designing and producing an app that can be easily used by students in their real life. In particular, given the developmental phase of elementary school students, specific operational activities are important. For this reason, an App Inventor that can be proposed to enable dynamic interactions with the real world based on various smartphone sensors during the process of programing has significance as an educational programing language for elementary school students. In this regard, this study designed App Inventor programing education for elementary school students, which can be used in their daily life. The results of applying the education in fifth graders showed its positive effects on learning programing. LT collaborative learning where the students cooperated with each other, the theme of learning, which enables the utilization of various smartphone sensors in real life, and the app inventor may have generated and sustained the students' interest and attention.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.61-64
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• 2014

본 논문에서는 MIT에서 개발한 앱인벤터 2 서버를 자체적으로 구축하여 서비스를 제공하고, 자체 서버에서 안드로이드 앱을 개발하는 과정을 분석한다. 앱인벤터 2는 프로그래밍 언어를 배우지 않은 사람도 원하는 기능의 스마트폰의 앱을 개발할 수 있는 공개 소프트웨어로 초증등 학생들의 창의 및 논리적 사고 형성에 많은 도움을 주고 있는 교육적이면서 기능적으로 확장성이 뛰어난 전 세계적인 도구이다. 하지만 지금 사용되고 있는 앱 인벤터 2 는 MIT 사이트에 접속하여야 하며, 구글 크롬 브라우저에서 작동이 되고, 구글 메일 ID를 생성해 로그인을 해야 함으로, 만 14세 미만은 사용할 수가 없다. 이러한 앱인벤터 2를 자체적인 서버로 구축하여 로컬 서비스를 함으로써 이러한 단점을 보완한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.2
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• pp.467-472
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• 2013

Many people are showing interest on computing and computer programming ever as much as the smartphone become more popular. Computer programming languages, however, like Java or C++ being used to teach freshmen in computer science-related majors as the first programming language they will study are so difficult to understand. In this paper, we proposed a short-term curriculum for teaching computer programming using App Inventor for Android to freshmen students major in computer science as the first programming language they will study, which can encourage their interest in computer programming. According to survey from students participated in actual teaching, we found that the proposed curriculum can contribute to increase their interest on computer programming and even self-confidence on development of applications for smarphone.

• Journal of The Korean Association of Information Education
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• v.20 no.5
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• pp.519-526
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• 2016

MIT App Inventor 2, much like the other block-based programming languages such as Scratch and Alice, is a useful tool that can be utilized to improve the computational thinking skills for students. The coding and the execution of program are done mainly on the computer in Scratch programming, but in App Inventor 2 programming, the students can execute the program and get immediate feedback on the smart-phone in the middle of the programming. Therefore, we can expect better enhanced learning effect. In this study, it has been claimed that the learning of App Inventor2 can strengthen the computational thinking skills of our students by extracting four core concepts of the computational thinking and then showing how these concepts are applied through the learning of App Inventor 2.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.2
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• pp.221-226
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• 2018

Open source software allows revising and adding a new idea on them as well as debugging themselves. The open source software can be utilized as various educational programs as well as development of a commercial software products using them. MIT App Inventor, one of the block-based visual programming environments for education, supports building a local server and even revision of the platform itself by providing its own source codes. In this paper we implement App Inventor open sources on the local server. Especially we present how to revise and implement a new App Inventor platform reflecting their own requirements in schools or educational institutes and how to build a local server operating the revised App Inventor platform. They can provide more interactive educational environments to students and improve educational satisfaction through the active customizing of the platform itself such as adding new programming block components requested by students.

• Journal of Bio-Environment Control
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• v.31 no.4
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• pp.452-459
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• 2022

One of the important factors among the smart farm factors is environmental measurement. This study tried to design an environmental measurement monitoring system through Bluetooth wireless communication with LoRa using the open source programs Arduino, App Inventor, and Node Red. This system consists of Arduino, LoRa shield, temperature and humidity sensor (SHT10), and carbon dioxide sensor (K30). The environmental measurement system is configured as a system that allows the sensor to collect environmental data and transmit it to the user through wireless communication to conveniently monitor the farm environment. As libraries used in the Arduino program, LoRa.h, Sensirion.h, LiquidCrystal_I2C.h and K30_I2C.h were used. When receiving environmental data from the sensor at regular intervals, coding using average value was used for data stabilization. An Android-based app was developed using Node Red and App Inventor program as the user interface. It can be seen that the environmental data for the sensor is well collected with the screen output to the serial screen of Arduino, the screen of the smartphone, and the user interface of Node Red. Through these open source-based platforms and programs will be applied to various agricultural applications.