RANCANG BANGUN APLIKASI AUGMENTED REALITY MARKERLESS BERBASIS ANDROID SEBAGAI MEDIA PEMBELAJARAN CYLINDER HEAD MESIN 4-TAK KENDARAAN RODA DUA (Studi Kasus: SMK YPT 2 Purbalingga)

Learning media is everything that can be used to channel messages and stimulate the learning process in students. But in machine learning two-wheeled vehicles that are easier to learn when practicing or at least there are tools for simulation during learning. For this reason, the writer applies an augmented reality markerless technology as a learning machine for two-wheeled vehicles to help and as a learning media for students the method used is MDLC (Multimedia Development Life Cycle) which consists of six stages, namely concept, design, material collection, manufacture , testing and distribution. This study produced an augmented reality application that helped visualize 4-stroke motorcycle engines in the form of 3D models for vocational students.