Development of an instructional model based on conceptual change model and leshs translation model approaches to enhance mathematical concept of lower secondary school students
Abstract:
This study was a research and development research. The main purpose of this study was to develop and study the effectiveness of an instructional model based on conceptual change model and Lech's translation model approaches to enhance mathematical concept of lower secondary school students. The research procedures were divided into 4 phases: 1) Studying the preliminary data for developing the instructional model; 2) Developing the instructional model; 3) Studying the effectiveness of instructional model, and 4) Proposing the completed instructional model. The participants were 40 students in Mattayomsuksa 3, selected by purposive sampling. The duration for implementing the instructional model was 7 weeks, 35 periods. The research instruments were Mathematics concept test. Data were analyzed using statistical mean, standard deviation, and t-test. The findings of this study revealed that: 1. The five principles of the instructional model are as follows: 1) Learning occurs when learners encounter problems or situations that cant be solved or explained by the student's concept. 2) Interaction with environment by observing, collecting data, or studying from various theories. 3) Presentation of mathematical knowledge using a variety of mathematical representational models and their relationship to that concept. 4) The students using the agent Mathematics to present mathematical knowledge, and 5) Presentation of the algorithm for finding the correct and appropriate answer. This instructional model consisted of 5 stages, as namely 1) Arousing suspicion; 2) Planning for conceptualization; 3) Using various representation for conceptualization; 4) Summarizing the meaning of a new concept, and 5) Implementation. 2.The effectiveness of the instructional model after implementation was found. The average score of Mathematics concept was higher than before the experiment at the .05 level of significance and the average score of Mathematics concept in characterization, definition, and giving examples were also higher than before the experiment at the .05 level of significance. In addition, Mathematical concept of the students had a positive change.