Development of Project-based Mathematics Learning (PjBL) Using the Island Sea Context

Implementing learning using the PjBL model will be meaningful for students if it is connected to the students’ world. This research aims to produce a mathematics learning tool with the PjBL model that is valid, practical, and effective in the context of the island sea. This research is development research that aims to develop an island sea-based PjBL learning model. The development stages use a 4D model which consists of definition, design, development, and dissemination; however, in this research dissemination was not carried out. The research results show that the mathematics learning tools using PjBL are valid, practical, and effective. The learning tools used in learning are proven to be very practical for student activities and improve learning outcomes. The accompanying impact that emerges is communication skills and complex problem solving. Keywords: project-based learning, island marine context, 4D model, problem solving