Increasing Problem-Solving Skills on Application of Non-Linear Equations with the Use of Strategic intervention Material (SIM)

Abstract

INTRODUCTION

Problem Solving on the Application of Nonlinear Equations is among the least mastered skills of Grade 11 STEM students obtained during the first quarter examination, SY 2018-2019. Based on available data, during the first semester SY 2018-2019, the statistic was only 33.21%, falling below the target of 75%. Focused group discussions with Mathematics teachers handling the subject identified inability of students to formulate appropriate equations to solve problems. Thus, it is imperative to focus our study in problem-solving through the use of Strategic Intervention Material (SIM).

METHODS

The design of the study was quantitative in nature and used descriptive and inferential statistical analysis. The existing relationships between correlated variables were also given appropriate attention with the use of the t-test. The intervention and making of the SIM were anchored on satisfaction levels and effectivity.

RESULTS

Results on the validation of the SIM for improvement of its content and appearance showed a mean of 4.11 and 4.57 among Math Teachers, and 4.33 and 4.75 on the first and second rating, respectively (Likert scale of 1 (lowest)-5 (highest)). The results showed a satisfaction level of "Excellent" for Math teachers and SHS students. Raw scores taken by thirty (30) Grade 11 STEM students increased from an MPS of 9 to 14. In order to test the significance of the increase in the raw scores, the computation of the t-test showed that the t-value of 12.57 is in the rejection region. It is greater than the tabular value of 1.699, thus the null hypothesis (there is no significant increase in the students’ performance in problem solving on the applications of nonlinear equations) is rejected.

DISCUSSIONS

The validation of the SIM on its content and appearance showed that majority of the respondents are satisfied with its content and appearance. An increase on the mean performance score (MPS) and applying the t-test validated that there was a significant increase in students' performance in problem-solving with the use of the strategic intervention material. Thus, the use of SIM is effective in increasing problem-solving skill on application of non-linear equations. The result of this study calls for similar interventions from teachers in all levels to address the least learned skills of students in any subject area.