The aims of this study were (1) to reveal the students 'ability solve problems related area flat shape that was taught after using Problem Based Learning model supported by visual media, (2) students' ability Direct Instruction (3) whether there is an effect media on a shape. This uses research design Nonequivalent Control Group Design with Quasi Experiment techniques or quasi-experimental quan...

The potential possessed by students is not only contextual. However, it must be comprehensive and essentially understand the concept of science. Based on results a preliminary study conducted at SMAN 2 Garut using interview techniques with Physics teachers, was revealed that students' learning in schools had implemented various models. achievement outcomes from each model different depending ho...

Background: Problem Solving is one of the 21st century skills that must be mastered by students. In biology learning, ability students to solve problems using their metacognitive process information and knowledge problems. This study aims describe relationship between problem-solving abilities in learning class XI science. Methods: method used this research descriptive correlation. The sampling...

yard crane is an important resource in container terminals. efficient utilization of the yard crane significantly improves the productivity and the profitability of the container terminal. this paper presents a mixed integer programming model for the yard crane scheduling problem with non- interference constraint that is nphard in nature. in other words, one of the most important constraints in...