Mathematical Modeling Approach to Promote Problem Solving Ability about Volume and Capacity of Cuboid for Grade 5 Lahu Tribal Students

Abstract

Mathematics teaching and learning were a stilled a problem. Therefore conducting research by guideline for learning management of used mathematical modeling development that promoted problem solving abilities. The volume and capacity of cuboid on grade 5 of 14 students’ Lahu tribal in the opportunity expansion school at Kamphaeng Phet province by used 3 classroom action research spirals. Research instruments were lesson plans, learning sheets, reflective journals, and semi-structured interviews. The content analysis and data credibility by method triangulation. The research found that the learning management guideline consisted of 6 steps: there were 1) Understanding 2) Simplifying/structuring                3) Mathematizing 4) Making mathematically 5) Interpreting and Validating and 6) presenting. The issue that should be emphasize were using real life problem situation that relate to students and let students create hypotheses for problem solving and mathematical models that lead to problem-solving. Also used of questions for consistently motivate and supported their writing and presenting of Thai language. Also found that in the third operating cycle, the most of students (more than 85 percentages) were developed the ability to solve problems in each element at level 3: there were students could understand problem and selected strategies to solving problems and including checked and reflected the problem process however still needed to develop in the explorer the problem in further. The research result will guide for application guidelines for learning management mathematics to promote the ability to solve math problems even better.