The Effect of Problem Solving Models to Improve High Levels of Skills Ability Students

Abstract

This study aims to describe the practicality, effectiveness and size of the influence of problem solving learning model in improving the ability of high-level thinking students of senior high school state 13 at Bandar Lampung. The method used is “pre-experimental” with One Group Pre-test Post-test Design. The population in this study are all students of class X MIPA. The sample in this research are the students of class X MIPA 2 obtained by cluster random sampling technique. Practicality is measured based on the implementation of the problem solving learning model (seen from the observation sheet of the learning model’s model) and the attractiveness of the problem solving learning model (seen from the student response questionnaire). The effectiveness is measured based on the teacher’s observation capability in managing the learning process, observation sheet of student activity during the learning process and the result of the students’ high-level thinking ability improvements. Effect size is measured by t-test and effect size test. The results showed that the model of problem solving learning has practicality in improving students’ high thinking ability on the material of electrolyte and non electrolyte solution. The problem solving learning model also has the effectiveness and size of the “big” influence in improving students’ high-order thinking ability on the material of electrolyte and non electrolyte solution.