The Development of Lesson Plan of PBL Model to Promote Critical Thinking Ability and Students’ Curiosity in Acid-Base

Abstract

This research was aimed to develop Lesson Plan of PBL model to promote students' critical thinking ability and curiosity. This Lesson Plan was developed using Research and Development method with the following procedure: 1) Analysis of initial ability of initial students’ critical thinking and curiosity, 2) Designing Lesson Plan based on PBL model, 3) Assessing of Lesson Plan developed, 4) Validating of critical thinking evaluation instrument, 5) Analysis of critical thinking and students' curiosity after treatment, 6) Limited testing to school using quasi-experimental methods with randomized control group pretest-posttest design. The data obtained were analyzed by the descriptive and inferential statistic. The effectiveness of implementation Lesson Plan developed was analyzed by using paired sample test analysis (T-Paired). The Learning of using Lesson Plan developed effectively improve students' critical thinking ability obtained p-value T-paired of 0.00062 because of p-value smaller than alfa 5% or by looking |t-calculation| > t- table where t-calculation is 4.0551 and t-table 2.0859. In the effectiveness of using of Lesson Plan developed on students' curiosity, there is significantly different before and after learning using Lesson Plan developed obtained p-value 0.45988 bigger than alfa 5% or by looking |t-calculation| < t-table where t-calculation 0.74624 and t-table 1.68385.

Keywords: Development Lesson Plan PBL model, critical thinking, students' curiosity, acid-base