Development of online learning devices based on project based learning (PjBL) in optical materials

Abstract In the twenty fisrt century Science and Technology (IPTEK) is developing very rapidly, including in aspect of communication. This closely related to everyday life because use technology as a tool that makes human work easier. Long distance communication commonplace this era. Currently due COVID-19 pandemic, student learning being carried out online using one media, namely Google Meet. So with technological advancement, can be done anywhere anytime. The purpose study was develop lesson plan or plans Project Based Learning (PjBL) model on optical materials. method used ADDIE (Analysis), Design (Design), Development (Development), Implementation (Implementation), Evaluation (Evaluation). After going through process validation testing students, results development device are valid so they