Children are interested in new things, interactive, motivate, and fun things that can be used for the learning system. Nowadays, the system of traditional learning such as books and toys are not effective to make children interest to use. Technology must be included in the learning system which is can be able to introduce the function and usefulness of the technology for children. Children's knowledge about the future of professions that can be used as their goal life is still limited. Meanwhile, there are kinds of professions that children must know with the result that they have more insight into the world and know what talent they have which is can become a profession in the future. Augmented Reality is a technology that makes virtual objects possible to be seen in 3 dimensions and as in reality. By determine marker or image that will be the target of a smartphone camera, that marker will result in a 3-dimensional shape on the smartphone screen if the camera was pointed at the marker. This research was conducted with interviews and application trials. We conducted intense interviews with several children under 5 years as a reference for understanding about profession.

Abstract During the pandemic of covid-19, betta fish cultivation is one of the income alternatives. It makes the cultivation of betta fish is increasing. However, not all cultivators can successfully cultivate betta fish. Water quality and fish feed must be maintained in order for betta fish can grow perfectly and attractive. The problems that often encountered to the betta fish cultivator is about feeding and monitoring pH levels, which is still manual. This is can failure in betta fish cultivation of the cultivators are not disciplined. To minimize it, then will be made “Prototype Fish Feeding System and PH Monitoring Based Android”. This research is used PLC method: (a) Requirements Analysis, (b) Design, and (c) Implementation. Divided into 2 functions: Automatic Betta Fish Feeding System Based Android Function using Node MCU ESP8266 and Monitoring PH Levels Function using Arduino Uno. The result from this research is the user can control the open and close feed on the servo through an android application, the system can provide a distance of the feed supply to a user in real-time by notifications, the LCD always display pH value, the buzzer provides a sound when the water quality has reached the acid or alkaline index.