User:Dieund/sandbox

INTRODUCTION
The Hybrid learning model is an educational model that combines face-to-face learning in the classroom (Offline mode) and online learning (Online mode). In this model, teachers teach directly in class the images, multimedia data, and learning data are shared in the online virtual classroom. Students will use smart desks to support learning, while remote students will participate in virtual classrooms for learning. Students attending classes remotely, as well as students taking in-person classes, can access resources and interact with teachers, and help distance learners understand the lesson like their classmates.

Smart Desk:
A student's desk is designed based on an embedded device (Jetson Nano) equipped with peripherals such as webcams, microphones, headsets, and touch screens that allow students to interact with teachers and other students through pre-installed software as described in Figure 2, this device is connected to the internet to receive and send learning data as well as lesson data to the server system

Smart Podium:
As a combination of devices, the hub is a Mini ITX computer connected to peripheral devices such as a webcam (to record video in the classroom), microphone (to capture classroom audio), speakers (Play multimedia audio or sound from smart desks of students), touch screen (For teachers to interact or process), large touch screen for teachers can record to the board [can use the camera to record the content recorded on the board if the large touch screen is not available], in addition, the device is also capable of connecting to the IoT MCU controller to turn on and off electronic devices in the classroom such as lights, fans, air conditioners, etc. This ITX computer is connected to the network so the software can interact with the cloud server and the smart desk.

Cloud Server:
Has the function of receiving and processing the response data from smart desks and smart podiums. In addition, there are other services such as providing APIs for Mobile applications in which parents can monitor their children's attendance, APIs for smart podiums that assist teachers in viewing the progress of lessons. student learning, and Web Admin for administrators

SYSTEM ARCHITECTURE OF HYBRID CLASSROOM
The architecture of the proposed system is a smart desk based on Jetson Nano with an integrated touch screen, Microphone, Speaker, Camera like and connected to the Internet that can interact with other components The system consists of 3 main sites: Smart Desk Site, Cloud Site, and Manage Site, each site takes on each task.

Smart Desk Site:
Designed from the Jetson Nano embedded device, peripherals that are directly connected via USB such as microphones, speakers, cameras, and touch screens are connected to the Internet.

Cloud Site:
The Cloud site has the function of receiving features from the smart desk and matching these features with previously stored student identification data to detect whether the person in the picture is correct with the data declared or not. In addition, this server class also has other services such as providing APIs for Mobile applications in which parents can monitor their children's attendance, API for smart podiums to support teachers to view attendance processes join the lesson for students, and Web Admin for administrators

Manager Site:
This site assumes the function of communicating with administrators, teachers, or students' parents, specifically as follows


 * 1) Browser: This is a management website that is used by a manager (Maybe the principal or a responsible person) in classroom management or teacher management, in addition, this web management system also has a function that allows teachers to staff monitor the attendance process of each specific student.
 * 2) Smart Podium: In addition to the function of supporting teaching and controlling IoT devices in the classroom of the software on the device, we have added a function to support teachers who are teaching to be able to grasp the attendance status of students.
 * 3) Mobile Application: The purpose is that parents can look up their child's attendance information, Each parent is provided with an account to see if their child's results have entered the lesson while studying, whether they are learning continuously or not. Through the software, parents will be notified when their child is out of class.