The Development of Project Based Learning Module for Vocational High Schools to Improve Critical Thingking Skills

Critical thinking is one of the skills needed by vocational high school students in world work and has a positive impact on students' fieldwork practices. Therefore aim this research to produce mathematics module focused critical using project-based learning model. Thiagarajan's 4D development model, namely define, design, develop, dissemination, used Validation tests, questionnaires, observations, interviews, tests were collect data. Data analysis was carried out quantitatively qualitatively. Quantitative uses descriptive statistical T-tests while qualitative comes from suggestions input media experts, materials, practitioners, teachers, students. The results showed that: (1) for grade 11th met valid criteria based assessment material students; (2) with sig score 0.000 T-test, who took these have better than those don't. So that can be classified as effective use learning. This indicates meets requirements