Utilization of Cross Multiplication in Teaching Subtraction of Fractions: Basis for School-Based Program

Abstract

INTRODUCTION

Schools are under greater pressure today than ever before to provide a quality education for every student. This is an age of change wherein new ideas, new methods, and new materials abound. In order to meet the challenge of change, teachers must have a seemingly endless source of energy, skill, and dedication. They must have the full support of the community. This means a compatible learning environment, a reasonable workload, and the finest materials available. This study was conducted to help the Grade 7 students in increasing their performance in Mathematics.

METHODS

The study used two instruments namely, the Pretest and the Posttest in Mathematics. The test was constructed by the researcher in accordance with the k to 12 Grade 7 Mathematics Learning Competencies. Ten items covering the topic of Subtraction of Fractions. The questions of the Pretest were taken from the national published book of the Grade 7 Mathematics. While The Posttest questions were taken from the k to 12 Grade 7 Mathematics Module. Before the conduct of the study, the researcher prepared a ten-item Pretest. The Grade 7 Carnation students were utilized in this study. The study was conducted for four days. Worksheets were provided by the researcher which was used during the study. On the last day of the study Posttest was conducted. '

As shown in Table 4, the pretest mean score was 1.1 and posttest mean score was 4.5. Using t-test for paired sample to test the hypotheses of the study, the computed t value is 29.96 and the t critical (two tail) value was 2.045. The computed t value was greater than the t critical. Therefore, the difference between the Pretest and Posttest is highly significant. The null hypotheses that there was no significant difference between the Pretest and Posttest results was rejected.

DISCUSSIONS

There was a significant difference between the pretest and posttest because the computed t-ratio (29.966) was greater than the critical t value at the 0.05 level, df = 29. Utilizing Cross Multiplication Method in performing Subtraction of Fractions was more effective approach in enhancing the performance of the Grade 7 students in Mathematics