Development of Science Learning Tools using the STEM Approach to Train Problem Solving Ability and Students Activeness in Global Warming Material

The success of learning in schools cannot be separated from planning appropriate strategies and tools used by teachers the classroom. device is teacher as a benchmark to see how far has succeeded teaching which can seen when method tool applied. This research aims produce science using STEM approach train problem solving abiliy students activeness on global warming material that suitable for use support process. development procedure this refers ADDIE model. Data collection techniques obtained observation, questionnaires, documentation. Based results research, it shows developed have characteristics, including: with so they refer disciplines science, technology, engineering, mathematics; leaflet media medium convey information; taking theme main subject; there are indicators abilities developed; activity developed. feasibility test analysis based percentage validation presentation aspects, namely syllabus 94.60%, lesson plans 94.46%, student discussion sheet 93.50%, questions 93.34%, observation 95.42%, 97.50%. Meanwhile, also response questionnaire validity, practicality, effectiveness aspects 89.56% means very good assist delivery this, concluded process