The Effectiveness of High School Biology Students Worksheets Based on Critical Thinking Skills on the Protista Concept

Abstract

Learning in the 2013 curriculum has one component, namely the existence of teaching materials in the form of student worksheets. This study aims to describe the effectiveness of student worksheets based on critical thinking skills on the Protista concept. This study uses a formative evaluation design method from Tessmer. The student worksheet developed refers to the student worksheets structure according to Daryanto & Dwicahyono, while his critical thinking skills refer to Facione 1990. Subjects in expert review consist of three experts, subjects in one to one evaluation consist of three students in class X high school and the subjects in the small group evaluation consisted of six high school grade X students. The results of research conducted indicate that: 1) student worksheets have a valid category based on the validity test; 2) student worksheets have a good category based on content practicality tests and has a very good category on practicality expectations based on students' responses; and 3) student worksheets has a very good category based on the assessment of students' critical thinking skills on the effectiveness test and has a very good category on interpersonal skills (working together) and intrapersonal skills (thorough).