Rubric, aligned with A Taxonomy for Learning, Teaching, and Assessing. After this, the participants were
reminded of their scheduled intervention sessions.
The day following the pretest, the PBL intervention began. Students were grouped and assigned a real-life
problem scenario to solve. They were given 60 minutes during five class periods to research, write, and
organize their informationâusing textbooks, computers, or collaborating in-class with peers. Some groups
extended their work beyond class hours, either at home or elsewhere, to prepare presentations. During the
second week of PBL, each group presented their outputs to at least two other first-year sections taught by the
researcher. These sessions were documented in a journal, noting the number of groups that stayed on task
throughout the process.
On the same day in the afternoon, the CL intervention was introduced. Students were evenly grouped based on
ability levels, as determined by the researcherâs prior observations. Each group was allotted 90 minutes to
complete various collaborative tasks over a period of nearly one month. Throughout this process, the
researcher documented student participation and group dynamics to ensure active engagement.
To maintain objectivity and fairness, the intervention sessions were observed by a supervising professor who
also contributed suggestions to enhance the activities. This oversight ensured that both interventions were
implemented consistently and equitably across the two groups. The entire study was conducted within the
Academic Year 2015â2016.
After completing all interventions, students were asked to write another essay (post-test) using the same format
and topic as the pretest. The same rubric was used to assess the posttest essays. Pre-test and post-test results
were then compared to determine the impact of the learning activities on studentsâ writing composition
proficiency.
The researcher ensured fairness and impartiality in the selection of respondents. To avoid any perception of
favoritism or bias, two groups were randomly selected from the identified sections. Even during the formation
of student groups, participants were equitably distributed based on their observed performance levels. The
assigned project was relevant, appropriate, and aligned with the materials available to the students, and it was
fairly assigned to all groups. The researcher took care to treat all respondents equally, respecting their rights
and maintaining the confidentiality of their results. Proper procedures were followed in terms of presenting,
gaining approval for, and conducting the study, ensuring ethical considerations were upheld throughout.
Statistical Treatment of Data
The data collected in this experimental research underwent Frequency Count and Mean. Frequency counts
were used to display the number of students who received scores of 1, 2, 3, or 4 based on the writing rubric in
both the pretest and posttest. The mean scores represented the average performance of the respondents in the
problem-based learning and cooperative learning groups during both phases of assessment, and Mann-
Whitney U Test, since the data distribution for each group did not meet the assumption of normality, the
Mann-Whitney U test, a non-parametric alternative, was employed. This test was used to compare the pretest
and posttest scores of students in the PBL and CL groups and to determine whether there were statistically
significant differences in their writing performance following the interventions.
RESULT AND DISCUSSION
The first objective of the study was to determine the pretest result on writing competency of the first-year
college students of University of Perpetual Help System in terms of content, organization, vocabulary,
sentence construction, and mechanics. The results are presented in table form and are verbally interpreted in
the following: