https://hdl.handle.net/20.500.14353/110 2026-05-09T06:27:52Z https://hdl.handle.net/20.500.14353/116 pH indicator from kamias (Averrhoa bilimbi L.) flower extract Jusayan, Shirley R. The acidic or basic nature of materials is usually determined using pH meter and commercially-sold or synthetic indicating means. In this study, an eco-friendly pH indicator was prepared from the aqueous and ethanolic extract of kamias (Averrhoa bilimbi L.) flowers containing anthocyanin pigment. The Kamias pH indicator paper was calibrated using buffer solutions pH 0 to 14 to come up with a colored chart. This served as reference in the subsequent effectiveness and acceptability tests conducted of the product. The indicator produced showed a highly acceptable response from the respondents proving that it can be a good alternative to commercially-sold pH indicating means. The shelf-life test also revealed that it could withstand the storage time of 3 months without losing its effectivity. These findings have significant implications to further refine the product and prolong its storage time, and consequently, the production of kamias pH indicator paper. 2015-06-01T00:00:00Z https://hdl.handle.net/20.500.14353/113 Effects of creative writing activities on student achievement in mathematics Pantino, Francis O.; Quimbo, Maria Ana T.; Pantino, Joy H. This study investigated the effects of using creative writing activities in mathematics to measure students’ mathematics achievement. Using a quasi-experimental design, the data were collected from 60 respondents from three intact classes of college freshman students from a university in Iloilo City from June 23, 2014 to October 2, 2014. Results of the study showed no significant differences noted on students’ mathematics achievement after exposure to the three methods of instruction when pre-test scores in the mathematics achievement test were used as covariate. However, the paired samples t-tests showed that there was a significant difference in students’ mathematics achievement test scores before and after exposure to Treatment 1, Treatment 2, and Conventional set up. It was concluded that regardless of the method of instruction, students can demonstrate significant gain in the mathematics achievement test. It was recommended that the teacher integrate more mathematics content in creative writing activities. 2015-06-01T00:00:00Z https://hdl.handle.net/20.500.14353/155 Personal variables, comprehension of the four bioethics principles, and convictions towards bioethical issues: A path analysis Yap-Figueras, Jeannemar Genevive; Lopez, Crisanto This study aimed to determine the relationship of factors influencing bioethical convictions of B.S. Biology students. It focused on the efficacy of case study discussion in improving comprehension of the four Bioethics principles, the efficiency of a Bioethics course in improving bioethical convictions, the identifying predictors for comprehension of Bioethics principles and bioethical convictions, and the creating of model constructs of predictors which are fit for the data. The convictions test for bioethical issues, Comprehension test for the four bioethics principles, a survey-questionnaire, Otis-Lennon School Ability test and 16PF test were used in gathering data from 116 participants. T-test for dependent samples was used to determine effects of the case study discussion and the bioethics course. To identify predictors for comprehension and convictions among personal and family background factors, global and primary personality factors, and mental ability, step-wise multiple regression was utilized. Path analysis models were then constructed and tested for goodness of fit using Structural Equation Modeling (SEM). Results showed that case study discussion and the Bioethics course were effective in improving comprehension and bioethical convictions, respectively. Predictors for comprehension of Bioethics principles before case study discussion were verbal ability, warmth, and exposure to media. Sex and openness to change were predictors for pre-convictions. Postconviction predictors were anxiety, self-control, extraversion, liveliness, and perfectionism. Four corrected path models were accepted based on fit indices criteria of SEM. In conclusion, personal factors, much as sex and personality factors are contributors in bioethical convictions, and not cognitive factors like mental ability or comprehension of the four Bioethics principles. 2015-06-01T00:00:00Z