The Development of Android-based Computer and Basic Network Learning Media

: This research aims to produce valid and practical android-based learning media. Learning methods that are not yet optimal and the absence of android-based learning media can be used as a medium to support the learning process. This research uses the Research and Development (R&D) method with the ADDIE development model. The subjects of this study were 20 students as samples. The data collection technique used a questionnaire with a Likert scale. The results showed that the average value of the media expert validity test was 0.68 with a valid category and the material expert was 0.67 with a valid category. For the practicality test, the teacher's response reached 83.33% with a very practical category and for student responses it reached 90.92% with a very practical category. Based on the assessment and input from media experts and material experts as well as the results of field trials, this Android-based learning media is suitable for use


Introduction
Education is a need for every human being, education is a process of forming human character which is very important to increase intelligence, skills and competencies in accordance with identity and environmental conditions (Berková et al., 2023;Samala et al., 2023;Tetteh et al., 2023).With education, the knowledge that we have will increase, the insight that we have will be wider, so that we can think in a more futuristic and rational way.In Law No. 20 of 2003 it is stated that national education functions to develop capabilities in producing national character and civilization that are useful in the context of educating the nation's life, aiming to develop the potential of students to become human beings who believe and fear the Almighty God, as democratic and responsible citizens.
Currently mobile devices, especially Android smartphones, have spread in various circles of society, ranging from adults, small children, among business people, students, and students, because Android smartphones can help do some important work or needs and make it easier to find and get information (Papadakis et al., 2021).Learning media is an important component of learning material, the existence of learning media determines the success of learning, technological developments facilitate the use of learning media, and media design also becomes easier (Isnaeni et al., 2021).
Android is an operating system for developing Linux-based mobile phones that includes operating systems, middleware, and applications, Android is an operating system for Linux-based mobile phones that provides an open platform that gives developers the freedom to create their own applications (Erlin Eveline et al., 2019;Lisana & Suciadi, 2021).Android-based learning media which is a teaching delivery system that presents text material, images, videos, audio recordings with computer control to students who not only hear and see video and audio, but also provide active feedback so as to determine the speed and sequence of presentation.

App
Inventor is an open-source web application originally developed by Google and currently maintained by the Massachusetts Institute of Technology (MIT) (Jain et al., 2023).App Inventor allows novice computer programmers to create applications for the Android operating system (Mir & Llueca, 2020).App Inventor uses a graphical interface, which allows users to drag-and-drop visual objects to create applications running on Android devices, MIT App Inventor is visual-based programming, even this programming is done simply by dragging and dropping on the tools provided , App Inventor is a web-based software that is shown for all Android developers, this software is easy to use because we don't need to write any programming or coding languages, we only need to arrange the available coding components such as putting together a puzzle (Adiono et al., 2019).
The advantages of MIT App Inventor are that it is more practical, simple and does not require coding, only logic and a drag system (Sangeetha et al., 2022), even so, there are some disadvantages of MIT App Inventor, namely, there are several components that are incomplete, much different from Eclipse which is more flexible, and there are credits from MIT. MIT App Inventor or an extension of the Massachusetts Institute of Technology is a platform that is used to create android applications without using a programming language (Top & Gökbulut, 2022), or web-based applications where in making learning media there is no cost but free and only by connecting to the internet to create an Android application (Adiono et al., 2019;Sarkar et al., 2019).
Computer and basic network subject teachers and several students of class X TKJ SMK Negeri 1 Lubuk Basung, information was obtained that in general the learning methods used by teachers when learning were conventional methods such as delivery of material in the form of lectures , so that students do not understand the material conveyed by the teacher during the learning process, this can be seen from the practice scores and student test scores which are still low.It can be concluded that learning media is an access to offline and online learning processes that can help teacher performance and student learning processes in teaching and learning activities.From some of the research problems, the research objectives can be explained as follows: a.This research produces valid android-based learning media.b.This research produces practical android-based learning media.The benefits of this research are: a. Can improve the quality of learning in achieving the developed curriculum b.Can facilitate teachers in the learning process c.As a media or tool in maximizing the delivery of learning material d.As an independent means and clarify students' understanding of learning material

Methods
This study uses the research and development (R&D) method with the ADDIE development model (Abdul-Rahman Al-Malah et al., 2020;Nadeem et al., 2022).Research and Development is a research method used to produce certain products, and test the effectiveness of these products (Prasetya, Fajri, et al., 2023;Prasetya, Syahri, et al., 2023;Wils et al., 2021).Android-based learning media is very important when the learning process takes place with the existence of Android-based learning media that can help students in teaching and learning activities, especially students in general already have smartphones, with Android students can repeat learning anytime and anywhere, and Android is one of the supporting tools the learning process by using it as a learning medium in basic computer and network subjects (Eliza et al., 2019a(Eliza et al., , 2019b;;Fitria, 2023).stage will prepare learning equipment and a well-conditioned environment, after everything is available the designer can implement the products that have been designed and then developed into the learning process activities in class.e. Evaluation Stage is carried out on the use of learning media after being tested on the subjects studied.This evaluation is intended to determine the quality and feasibility of the product being developed.The evaluation phase begins with the validation of each product by media experts and material experts then input is obtained for media improvement Data collection techniques are the most strategic steps in research, because the main purpose of research is to obtain data (Roberts, 2020).In this study used data collection techniques in the form of a questionnaire.Questionnaire is a data collection technique used to ask questions to get answers from respondents.The data analysis technique used in this study is one of the main procedures used in data analysis by collecting all the necessary data (Abdul-Rahman Al-Malah et al., 2020), namely the results of the validity of media experts and material experts as well as data from the practicality of media whether or not a media is appropriate is determined by judgments made by experts Practicality test analysis is used to test whether the media is practical or feasible.Practicality testing is done by using a questionnaire.The questionnaire used uses a Likert scale.The material expert instrument contains aspects related to learning media material which includes material, language and evaluation (Khaeroningtyas et al., 2016).The following is a grid for the learning material expert instrument.The media expert instrument contains points about aspects related to learning media.The following is a grid for the learning material expert instrument.To get the results of the validity of the material and media, the Aiken'V formula is used as follows:

Results and Discussion
The results in this study were Android -based learning media and Android learning media products created and designed by researchers, with the aim of being used as a teacher 's tool in the learning process and as a source of independent learning used by students at home or at school.school.
Development of android -based learning media on computer and basic network materials in subjects applying computer assembly using Research and Development (R&D) products to be developed in the form of android-based learning media.The development model used in this research is ADDIE ( analysis, design, development, implementation, evaluate) (Chatwattana et al., 2023).Android-based learning media is made using the MIT App Inventor platform.The development of android-based learning media is the use of android learning media that is run so that it runs as expected.how to install learning media software first so that it can run on Android.The following are the stages of developing Android-based learning media: a.Initial View This initial display is equipped with a welcome to basic computer and network subjects, besides that the researcher also uses a button to play / enter the next page.The initial appearance of the learning media can be seen below: The main menu display is the menu page android -based learning media, this menu has 7 button to connect the menu to the next menu ie instructions, basic competencies, absences, materials, videos, exercises and remedial main menu display can be seen below   f.Material view Display material is material that contains lessons learned by students in this display contains 2 materials, namely theory and practice that will be studied by students, namely implementing computer assembly and assembling computers, the material menu display can be seen in the image below.The video display of assembling a computer is in the video display of assembling a computer, it contains a learning video on how to assemble on a computer, which can be seen in the image below Research and development ( Research  and Development)  as a type of research aims to produce new products through a development process that is integrated with research activities .This study will use the ADDIE research model (Analysis-Design-Develop-Implementation-Evaluate) which is a generic learning or lesson design model which has 5 stages of development including Analysis , Design , Development, Implementation and Evaluation(Nita et al., 2022).

Figure 1 :
Figure 1: ADDIE Development Model validity rating score (in this case = 1) C = The highest validity rating score (in this case = 5) R = Number given by an appraiser N = Number of Validators (Experts)

Figure 2 :
Figure 2: Media Home Screen b.Main Menu DisplayThe main menu display is the menu page android -based learning media, this menu has 7 button to connect the menu to the next menu ie instructions, basic competencies, absences, materials, videos, exercises and remedial main menu display can be seen below

Figure 3 :
Figure 3: Media Main Menu display c.Hint display This screen contains instructions for using Android-based learning media.Here students can learn how to use Android-based learning media and help students use media and understand learning.The display instructions are shown in the image below

Figure 5 :Figure 6 .
Figure 5: KD display e. Absence DisplayThe attendance display contains the full name of the student and the class where the student took attendance there

Figure 7 .
Figure 7. Material menu display g.Video ViewThe video display of assembling a computer is in the video display of assembling a computer, it contains a learning video on how to assemble on a computer, which can be seen in the image below

Table 1 .
Categories the validity of learning media

Table 2 .
Categories the practicality by teachers and students