KESAHAN DAN KEBOLEHPERCAYAAN INSTRUMEN PENILAIAN KENDIRI PEMBELAJARAN GEOMETRI TINGKATAN SATU

Abstract

Purpose- This study sought to develop an instrument to evaluate student learning of Form One geometry and to determine the content validity and reliability of the self-learning evaluation instrument. Methodology - The development of the instrument is based on the Context-Input-Process-Product Evaluation Model (CIPP). The study involved three phases comprising the literature review, the development of the research instrument, and the analysis of the instrument's content validity and reliability. The instrument which was developed took the form of a two-layered rubric. The item construction and construct definition were based on the literature review. The review of the literature showed that there were five constructs, namely the existing knowledge of students, their understanding of geometry, their learning style, their attitude in learning and the teaching approach of their teachers. A total of 79 items was developed in this instrument. All five members of the panel of experts in the field of Mathematics Education agreed that the instrument developed had acceptable content validity. To determine the instrument's coefficient reliability, a study was conducted in three secondary schools in the district of Kuala Kangsar, Perak. A total of 400 Form Two students were selected as the population sample. The Statistical Package for Social Science (SPSS version 20) software was used to analyze the data obtained from the study. Findings - Apart from the main study, a pilot study was also conducted. The aim was to determine the stability of the Cronbach Alpha obtained through the pilot study as well as in the main study. In determining whether an item construct could be accepted or eliminated, the researchers compared the Cronbach Alpha values. An item was deleted if its Cronbach Alpha was not within the acceptable range. In addition, the Cronbach Alpha obtained from both studies was interpreted based on a Value Reliability Table. The reliability of Cronbach Alpha for the five constructs in the pilot study was between 0.722 and 0.945. However, the reliability of Cronbach Alpha for the five constructs in the actual study was between 0.813 and 0.940. Furthermore, the total value of Cronbach Alpha for the evaluation instrument of the pilot study and the actual study was 0.955 and 0.946 respectively. Significance - The self-evaluation instrument in learning geometry based on the CIPP model developed for this study was able to help students understand their level of mastery of the topics studied in Geometry. The students were helped in overcoming their shortcomings in the learning of Geometry. This self-evaluation instrument can be an important resource to assist teachers in designing learning strategies and to facilitate the more effective teaching of geometry topics. This self-evaluation instrument can also be used as a guide for determining the achievement of the learning outcomes of Form One Geometry.