The Development of CLODS Instructional Model for the Application to Solve the Problems of Trigonometric Functions under Additional Mathematics Course (MA 32201) in Mathematics Learning Strand for Mathayom Suksa 5

Abstract

The objectives of this research were to develop the CLODS instructional model for the application  to solve problems of trigonometric functions under Additional Mathematics Course (MA 32201) in Mathematics Learning Strand and to study the efficiency of using the developed  CLODS instructional model for the application  to solve problems of trigonometric functions under Additional Mathematics Course (MA 32201) in Mathematics Learning Strand. The sample was 30 Mathayom Suksa 5/2 students in the first semester, academic year 2020 at Sap Nok Kaeo Witthaya School under Sa Kaeo Provincial Administrative Organization. The sample was selected based on a cluster random sampling. The results indicated that the developed CLODS instructional model for the application to solve problems of trigonometric functions under Additional Mathematics Course (MA 32201) in Mathematics Learning Strand consisted of important components, namely: principles and concepts,  purpose, instructional process, and measurement and evaluation. The instructional process contained five steps: Check Knowledge (C), Learn together (L), Operative (O), Discussion and examination (D), and Summary and evaluation (S). The experimental results of using the developed CLODS instructional model revealed that the learning achievement at post-experiment period was higher than pre-experiment period with a statistical significance level of .05. The sample’s problem-solving ability after taught with the developed CLODS instructional model was at a very good level at 78.80. which exceeded the set criteria at 75%. The sample’s opinions towards the developed CLODS instructional model was at the highest level (mean= 4.53, S.D. = 0.52).