The Development of Mathematics Learning Achievement on Two-dimensional and Three-dimensional Geometric Shapes for Grade 7 Students Using an Open Approach Model with GeoGebra Program

Abstract

The objectives of this research were: 1) to find the efficiency of the lesson plans on  two-dimensional and three-dimensional geometric shapes for grade 7 students using an Open Approach model with GeoGebra program to be effective according to the criteria of 70/70; 2) to compare learning achievement in mathematics on two-dimensional and three-dimensional geometric shapes before and after learning management; and 3) to study the satisfaction of grade 7 students by using an Open Approach model with GeoGebra program on two-dimensional and three-dimensional geometric shapes. The samples used in this research were Grade 7 students, semester 2, academic year 2022, at Muangsomdet School, who were obtained by cluster random sampling. The instruments were lesson plans, a mathematics learning achievement test, and a satisfaction questionnaire. Statistics used in data analysis were mean, standard deviation, percentage, and t-test. The results showed that 1) The effectiveness of an Open Approach model with GeoGebra program was efficiency 70.65/70.74, which met the set criteria. 2) The comparison of the learning achievement on two-dimensional and three-dimensional geometric shapes of grade 7 students after using an Open Approach model with GeoGebra program was higher than before using the learning management significantly at level .05. 3) The students were satisfied learning using an Open Approach model with GeoGebra program on two-dimensional and three-dimensional geometric shapes at a high level.