Development of Android-Based Student Performance Tool (Tunersindro) to Improve Work Readiness of Vocational High School Students

Work readiness has an effect on the unemployment rate for Vocational High School (SMK) graduates. Work readiness can be improved by improving learning patterns and tools. This study aims to develop learning aids, test the feasibility and effectiveness of the product. The research design used is the ADDIE Research Development (R&D) design with the stages of Analysis, Design, Development or Production, Implementation or Delivery and Evaluations. The research site is at SMK Muhammadiyah 2 Tempel with research subjects of 134 students, 14 teachers of Automotive Engineering Vocational School and 5 automotive industry practitioners. Data collection techniques used were questionnaires and tests with interview research instruments, media and product questionnaires and practice test sheets. Android-based student performance aids (Tunersindro) have a very high feasibility of being used in vocational learning. Not only that, with two trials, Tunersindro has a very high level of effectiveness in increasing the work readiness of SMK students


INTRODUCTION
Vocational education graduates in this case vocational high schools (SMK) are prepared to become competent and ready to work human resources Choy & Yeung, 2022). The rapid development of the world of work and industry is very influential on the formation of the competence of vocational students Çinar et al., 2009;. Especially at this time, Indonesia is faced with the era of the industrial revolution 4.0, which demands the work readiness of vocational school graduates in the face of new developments and competencies in the industry. The industrial revolution 4.0 is an interesting thing and must be faced by vocational school organizers (Amiron et al., 2019;Amen & Mustaqim, 2021;. The industrial revolution 4.0 demands the development of technology where digitalization and automation are according to industry needs . Tunersindro can improve the quality of SMK graduates if it is designed according to the expectations and needs of the industrial world. Not only that, the development of Tunersindro must place the industry in the preparation, process and evaluation of learning so that the quality of graduates is in line with the expectations of the industrial world.

METHODS
This study uses an ADDIE research and development (R&D) type research design which consists of: Analysis, Design, Development or Production, Implementation or Delivery and Evaluations. This study aims to develop an androidbased or Tunersindro-based student performance tool. Tunersindro was developed to support the improvement of vocational students' work readiness. The research subjects used were 34 students majoring in automotive at SMK Muhammadiyah Moyudan, teachers majoring in automotive engineering in Sleman Regency, totaling 14 teachers, and automotive industry practitioners totaling 5 practitioners. Data collection techniques used interviews in the form of focus group discussions (FGD), questionnaires and practice test sheets. (1) FGD aims to analyze the current learning needs of SMK.
(2) Questionnaires are used to get input from media experts on the feasibility of android-based or Tunersindro-based student performance aids. (3) Practice test sheets are used to determine the effectiveness of Tunersindro products/tools in improving students' practical performance. Tunersindro development stages can be seen in Figure 1.

Figure 1. ADDIE Research and Development Stages
Interviews in the form of FGDs are a series of needs analysis activities that contain instruments with a number of questions that function to explore information related to the current state of vocational learning and future expectations. The FGD instrument grid can be seen in Table 1. The data analysis of this research used descriptive quantitative data analysis techniques. After getting a number on the instrument, then the research data is changed in the form of a score and then the average answer is calculated based on the score of each answer with the following formula: Note: x= number of respondents Android-Based Student Performance Tool (Tunersindro) to Improve Work Readiness of Vocational High School Students n = number of answer scores x = average score of respondents To find out how big the feasibility and effectiveness of the Tunersindro learning aid development process, the data can be categorized in Table 4 as follows.   X: the score achieved by students x : Average overall score of students in one class SBx : Standard deviation of students' overall scores in one class x : (1/2) (ideal maximum score -ideal minimum score) SBx :(1/6) (ideal maximum score -ideal minimum score) Ideal Max Score:Item criteria x highest score Ideal Min Score:Item criteria x lowest score

RESULTS AND DISCUSSION
This study aims to develop and test the feasibility and effectiveness of an android-based student performance aid (Tunersindro) which is expected to improve the competence of vocational students. Tunersindro development stages use the ADDIE model (Analyze, Design, Develop, Implementation, Evaluate).

Analyze
The analysis stage is an activity that aims to analyze the learning needs in Vocational High School (SMK). This stage consists of Focus Group Discussion (FGD) activities with participants from teachers and industry practitioners. The FGD stages produced several notes and recommendations which can be seen in Table 5. Results of Needs Analysis From the results of the FGD, it can be concluded that the competence of vocational students has recently decreased which has an impact on work readiness. It takes a learning model that is supported by learning aids that can facilitate industry participation.

Design
After getting the results of the needs analysis, the next step is to design the Tunersindro learning tool. Tunersindro's design was obtained from input from industry and vocational schools. Tunersindo's design can be seen in Figure 3. Tunersinndrois a learning tool that is operated with android. Tunersindro consists of several components which can be seen in Table 6.

Develop
At this stage, Tunersindro is produced according to the results of the design stage. The development and production were carried out by researchers assisted by electronics experts from the Indonesian Robotic School and the automotive industry from the Otomotif Jogjakarta Center (OJC), Gama Multi, Barokah Workshop, AnggaNewTech and RND Auto Service. The development and production of Tunersindro was carried out and produced Tunersindro according to Figure 3. After Tunersindro works, the next step is to test the validity of the product with the help of expert judgment. The results of media validation show that Tunersindro has a very high feasibility to be used as a learning aid for vocational students. The results of media validation can be shown in Table 7.

Implementation
At this stage, the researcher applied Tunersindro to determine its effectiveness in increasing the work readiness of vocational students. Work readiness is determined by the achievement of aspects of attitude, knowledge and skills competencies. Tunersindro is applied to automotive learning and practical exams. The material used is the competence of diesel motor nozzle maintenance. To see the improvement in the application of Tunersindro, three times the application was carried out, namely: pretest, trial one and trial two (posttest). The results of the application of Tunersindro carried out for three times can be seen in Table 8. The results of the practical test showed that in the pretest, trial one and trial two there was an increase in aspects of attitude, knowledge and skill competencies gradually with the final result/posttest Tunersindro was very good at improving the work readiness of vocational students. The results of increasing competence in each trial can be seen in Figure 4. The application of android-based student performance aids (Tunersindro) can improve work readiness in the aspects of attitudes, knowledge and skills of Automotive Engineering SMK students. The results of the interview stage (FGD) at the stage of needs analysis and product validation resulted in the design, development and manufacture of Tunersindro in accordance with the needs of SMK and the automotive industry. This is in accordance with the results of research by Tamimi et al which stated that the application of learning aids with the internet system can help develop student competency skills and attitudes (M. . Arifah et al said that the application of learning through the role playing method with the help of online-based tools can improve social competence, attitude, responsibility and knowledge (Arifah Nurdin et al., 2018). The application of learning models assisted by internet-based learning tools can improve the work readiness of SMK students. This statement is in accordance with the results of research by Parjono et al, Sulistyaningrum and Novaliedry who concluded that learning models in vocational schools that are applied with learning aids will have an impact on increasing the work readiness of vocational students. .
Tunersindro has special characteristics, especially in the control system and the involvement of industrial practitioners. The control system used uses an android system that can be controlled automatically/online. Meanwhile, the role of industrial practitioners lies in the process of monitoring and evaluating learning. This is different from the learning aids that have been developed so far.   (2020) developed a tool for learning for Automotive Engineering SMK students with manual control and without involving industry. As a result, work competence is achieved but not adjusted to industry needs Diva et al., 2022;. Furthermore, the development of learning aids that have been developed so far does not involve industry to measure the success of the learning process and evaluation. ,Ramil (2022),Marco  and Dwiyati et al. (2018) stated that the use of learning aids for Automotive Vocational High School students so far has been running according to school authorities. Learning will produce competence but the legality and suitability of industry-based competencies will not be optimal Point Dwiyati et al., 2019).
Research on the development of android-based student performance aids (Tunersindro) will have an impact on changes in learning models and patterns. The learning model will demand a change from manual learning systems towards online and automated systems. Not only that, educational institutions will try to establish relationships with the automotive industry to jointly monitor and evaluate learning. Industry participation as a standard reference for learning success in SMK.
The development of Android-Based Student Performance Aids (Tunersindro) has a weakness that lies in the limited time of industry practitioners in monitoring and evaluating learning activities. So that further development stages are needed with a focus on a more flexible control system. Not only that, the selection of partner industries will be arranged to provide a standardized reference for competence and more

CONCLUSION
The development of an Android-Based Student Performance Tool (Tunersindro) is designed to improve the work readiness of SMK students. The application of Tunersindro for three times resulted in data that there was an increase in the competence of attitudes, knowledge and skills. Aspects of attitude consisting of initiative and responsibility, knowledge aspects of the field of work and aspects of work skills and punctuality increased from high to very high category. This shows that the application of the Tunersindro learning aid will have a positive effect on improving aspects of attitude, knowledge and skill competence.