Discipline: Education
Mathematical games have become an interesting area in educational research. The study was conducted to determine the effects of games on achievement in geometry. It was done in one of the public high schools in the Division of Nueva Vizcaya, Philippines. Quasi-experimental design, specifically the pretest-posttest control group design was adopted using two intact groups of fourth year students with 39 students each as the subjects of the study. The first group was assigned as the experimental group adopting the mathematical games strategy in teaching while the second group as the control group employing the traditional way of teaching. A 60-item multiple choice teacher-made test was the main instrument in the study. The test provided the scores for the pretest and posttest for the two groups of respondents. The test underwent a series of steps of validation and later on the reliability coefficient was determined at 0.91 using the KR20. The study found that the students who were exposed to mathematical games strategy obtained higher achievement scores compared to students taught using the traditional method. As a result, the researcher recommends the use of mathematical games strategy in presenting and discussing lessons for the purpose of achieving higher grades in Geometry.