The purpose of this study is to produce gabidroid media for the learning of numbers at primary schools. In this research, the development of media using research and development approach. The research data retrieval by means of observation, questionnaires and interviews. Data validity is done by means of triangulation of sources. Based on the results, the data analysis obtained 3.25 on very well criteria, the results of media legibility trials obtained 3.67 on very well criteria. The gabidroid media is worth to use because it satisfies common aspects, content feasibility, media presentation, language feasibility, and graphic eligibility.

The use of mobile apps in knowing the problems as early as possible was considered effective. The application of mobile applications required today was an application that could help determine various health problems. The health problems discussed in this study were the nutritional status of adolescents. The method of measuring the nutritional status used was the BMI / A method. Profile Matching method in built mobile application is used to rank the nutritional status of adolescents. Aspect of nutritional status assessment in this research was physical aspect (BMI/A and Physical Activity) with 70% and Non-Physical Aspect (Eating & Socioeconomic Aspect) with 30% assessment percentage. Core factor in the determination of nutritional status were the Category of BMI and Frequency of Eating. While, secondary factor were food pattern and socio Economics. The results of mobile application implementation with Profile Matching method in this research there were several forms for the process of ranking the status of Adolescent Nutrition. The form contained in Administrator features include Administrator Login Form, Aspect Setup Form, Sub Aspect Setting Form, Physical Activity Setting Form, Form Setting Frequency Diet, Setting Form BMI/A, Economic Condition Set Form, Setting Form Weight Gap Value. In the User Features there was an Assessment form and a page to see the results of ranking the nutritional status of adolescents.

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Pendidikan musik memiliki banyak manfaat dalam perkembangan kemampuan seorang anak, salah satunya adalah membantu meningkatkan konsentrasi dan imajinasi anak. Saat ini banyak orang tua yang mulai menyadari bahwa mengenalkan musik pada anak sejak usia dini adalah hal yang penting. Orang tuapun mulai mengajari alat musik secara langsung maupun melalui digital pada anak. Namun aplikasi yang ada saat ini belum memenuhi keinginan dan ketertarikan bagi pengguna. Maka, diberikan solusi rancang bangun aplikasi pengenalan alat musik bernama DOREMI dengan menggunakan metode User Centered Design (UCD). Perancangan aplikasi DOREMI berbasis Android ini memperhatikan banyak aspek. Salah satu aspek paling penting dalam perancangan aplikasi Android ini yaitu desain User Interface dan User Experience (UI/UX). Dengan perancangan UI/UX yang menarik akan menimbulkan minat pada anak-anak untuk belajar alat musik dari aplikasi tersebut. User Interface fokus kepada bagaimana seluruh tampilan aplikasi Android dilihat dan ditata dari antarmuka dengan pengguna. Sedangkan User Experience fokus kepada kenyamanan pengguna saat menggunakan aplikasi. Kemudian aplikasi diuji menggunakan white box dan black box.

A traditional house is a house that has a unique building characteristic in an area that describes the culture of the area itself. Traditional houses are also unique in terms of form, function and meaning of the building. As Indonesians, we must introduce one of the existing cultures so that it is not forgotten by the community, especially school children. Judging from the development of technology, we must make new things in introducing traditional houses. From the results of research conducted at SD IT BINA INSANI, the teachers there still use conventional media in the form of textbooks and thematic books for the learning process. Therefore, the authors created an application to introduce western Indonesian traditional houses using Augmented Reality called RA-IBB as an introduction medium. This application is based on Android so that teachers can easily explain material about traditional houses and can show traditional houses in 3D without having to come directly to the province. And for students to be able to study traditional houses wherever and whenever. The making of this application uses the waterfall method for the development stage. The RA-IBB application contains materials about western Indonesian traditional houses and their 3d objects and quiz questions that use random shuffle algorithm questions. The random shuffle algorithm is a randomized question from an array or record. Based on the User Acceptance Test (UAT) for teachers, the results obtained from several aspects, namely the design aspect yields a percentage of 91%, the application information aspect produces a percentage of 91.