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TESTING THE VALIDITY OF A PROBLEM SOLVING-BASED STUDENTS’ WORKSHEET ON SPACE MATERIAL FOR 5TH GRADE ELEMENTARY SCHOOL STUDENTS

This research aims to determine the feasibility of the instrument developed which is students worksheet (LKS) on the material of building-space. Eligibility for learning-kit is based on expert validation results and field trials. This study is a research development and the LKS developed using the Rowntree model consisting of three stages of 1) planning phase; 2) development stage and 3) evaluation phase which refers to self-evaluation and the expert judgment. The instrument used is a validation sheet. Data from validation sheets are analyzed in a descriptive quantitative and qualitative descriptive. The study involved This research involved 3 validators, each of them 1 expert in the field of evaluation, mathematics education and basic education, 2 teachers and 5 students of Grade V in Elementary School 12 Bireang District of Minasatene in Pangkep District, Makassar, South Sulawesi. The results showed that the results of the assessment based on expert judgments average value of the validator amounted to 4.32 so it is valid and feasible to be used in learning.