Effect of organizing learning activities by using the model method and cognitively guided instruction on mathematical problem solving ability of eighth grade students
Abstract:
The purpose of this research was to study mathematical problem solving ability of the eighth grade students who were taught by using the model method and cognitively guided instruction which composed of 1) compare mathematical problem solving ability of students who were taught by using the model method and cognitively guided instruction between before and after being taught by considering mathematical problem solving ability of the students for each aspects, and 2) study mathematical problem solving ability development of students who were taught by using the model method and cognitively guided instruction during three periods. The target group was consisted of 24 eighth grade students of Sathapornwittaya School in the first semester of the 2015 academic year. They were taught by using the model method and cognitively guided instruction. The instruments for data collection were the test for study mathematical problem solving ability development, interview form and mathematical problem solving ability pre-test and post-test with the reliabilities of 0.6 and 0.78, respectively. The experimental materials, which constructed by the researcher, were lesson plans using the model method and cognitively guided instruction. The data were analyzed by using arithmetic means, standard deviation and t test for dependent samples. The results of study revealed that : 1. The mathematical problem solving ability after being taught of the students who were taught by using the model method and cognitively guided instruction was better than before the instruction at the significant level of .05. When comparing the mathematical problem solving ability of the students in each aspects, we found that the students had better mathematical problem solving ability after the instruction in all aspects at the significant level of .05. 2. The mathematical problem solving ability of the students studying in the the model method and cognitively guided instruction gradually developed in all aspects, ranging from high to low as follows : problem formulation, problem solving, problem evaluation and problem understanding.