Papers by Marchee Picardal
Science education international, Jun 23, 2024
Gas Rules!: An Electronic Strategic Intervention Material for Online Learning: Students’ Conceptual Understanding and Perceptions
KIMIKA, Jun 12, 2023
Focusing on the big ideas: Non-biology science teachers learning experiences on biological evolution
Cakrawala Pendidikan: jurnal ilmiah pendidikan, May 29, 2023
Relationship between Students’ Attitudes on E-learning and their Technological Skills
Liceo Journal of Higher Education Research
Predictors of Chemistry Learning Among First Year University Students
International Journal of Instruction
Biosaintifika: Journal of Biology & Biology Education
Understanding the social-ecological dynamics of freshwater ecosystem is critical for effective pl... more Understanding the social-ecological dynamics of freshwater ecosystem is critical for effective planning and sustainable use of the resource. The study aimed to determine the socio-demographic profile, anthropogenic activities, water utilization of the residents, and waste disposal practices along the Sapangdaku River. Here, we examined water utilization, waste disposal practices and their corresponding impact to health, and environmental attitudes of riverside dwellers (n=120) in Sapangdaku River by using a standardized social health and environmental attitudes survey, respectively. Results show that while river water is still largely used for bathing and backyard farming, its known function as (a) disposal area of human and animal waste, (b) quarry site for pebbles and sand and (c) laundry area significantly decreased in recent years. Responses revealed that occurrence of very common ailments such as cough, gastroenteric problems and skin problems are partly associated to poor rive...
International Journal of Learning, Teaching and Educational Research
Undergraduate research as a high-impact educational practice aims to develop the personal and pro... more Undergraduate research as a high-impact educational practice aims to develop the personal and professional growth of preservice teachers and prepares them to be effective practitioners in the field. With the sudden shift in instructional delivery, a dearth of studies focusing on students’ experiences in conducting research in the online learning environment is observed. This study examined the experiences of 80 preservice teachers from a teacher education institution implementing a pure online instructional delivery in conducting educational research through descriptive phenomenology. Their narrative accounts were obtained through their post-assessment reflective journal with seven guide questions and were analyzed using thematic analysis. Their nuances articulated that students' prior knowledge and experiences in research, presence of support groups, availability of learning resources, and perceived benefits were the enabling factors for their learning success. However, there w...
Epidemiological Study on Kawasan Waterfalls
A place with clean water is worth living for, however, if it runs counter to the usual, it coroll... more A place with clean water is worth living for, however, if it runs counter to the usual, it corollary results in some diseases. This epidemiological study does not intend to give a false image on the Kawasan Waterfalls of Badian Cebu, Philippines rather, it aids to provide awareness among tourists to at least minimize anthropological activities that could contribute to water pollutants which cause an increased amount of heavy metals present in the water. With the collection of analyte and lab testing for the presence of cadmium, lead, and mercury in the aforementioned research environment, it was found that the water will not pose any health hazard to anyone in and around the river falls and even to any tourist in the place who wants to plunge into its azure water as far as cadmium and lead concentration is concerned. However, the mean concentration of mercury on the water projected a value, which is beyond the permissible concentrations and therefore may harm anyone in the community. Thus, it is recommended to strengthen measures to prevent and to control the release of these substances into the natural water. Shower facilities should be provided in the place and swimmers should wash first before plunging into the river. As part of an ongoing education and training effort, communicate all information on the health and safety hazards of mercury to potentially exposed individuals on the place. It is also suggested to conduct further concentration analysis of other metals present in the said water falls.
Recoletos Multidisciplinary Research Journal, 2022
Garden-based education (GBE) is an innovative approach to enhancing learners’ academic performanc... more Garden-based education (GBE) is an innovative approach to enhancing learners’ academic performance. However, the mechanism of how it develops the cognitive domain of learning is unclear. This meta-synthesis of 22 published articles focusing on garden-based education integration in the educative process examined its impact on mental aspects of learning. Secondary data from each reviewed article were extracted and analyzed thematically. Five themes emerged describing the impact of GBE on the cognitive domain of learning, namely, 1) experiential learning, 2) meaningful learning, 3) explicit and implicit learning, 4) discovery learning, and 5) transmissible learning. GBE is a successful program in most of the basic education curriculum integration contributing to the improvement of academic performance. Albeit, there is no standard template for its implementation as it varies across context and educational system, adopting the general principle of school garden learning in the teaching ...
Toxicity evaluation of white spike head (Kyllinga nemoralis) using brine shrimp lethality test and anthelminthic assay
International Journal of Biosciences (IJB), 2019
Kyllinga nemoralis has been utilized for the treatment of various illnesses in developing countri... more Kyllinga nemoralis has been utilized for the treatment of various illnesses in developing countries because it is inexpensive and readily available but toxicity evaluation of this plant is still unreported in scientific publications. This study investigated the toxicity level of combined roots and leaves of K. nemoralis (40g) using Brine Shrimp Lethality Assay and Earthworm Assay. The study employed Complete Randomized Design in triplicates (n= 210 A. salina nauplii and n=126 E. euginiae). For BSLA, four K. nemoralis ethanolic root+leaf extracts [KNERLE] (T1=1000ppm; T2=100ppm; T3=10ppm; and T4=1ppm) were tested for toxicity while in earthworm assay, four K. nemoralis aqueous root+leaf extracts [KNARLE] (T1=25g/ml; T2=20g/ml; T3=15g/ml; and T4=10g/ml) were tested for time paralysis and mortality. After 24h experimental period, mortality data were analyzed using ANOVA (p<0.01) and post hoc analysis (Tukey's test) while Probit analysis was employed to determine toxicity level of KNERLE at LC50. Result showed that there is a linear dose-dependent trends of KNERLE and KNARLE vs. nauplii (LC50 = 18.97ppm) and earthworm mortality (100% mortality comparable to positive control, Albendazole), respectively, suggesting that higher treatment concentration exhibit toxicity and anthelminthic properties. The study suggests that K. nemoralis root+leaf extracts are strongly toxic, and further investigation of toxicity using higher vertebrate models' tissue and organ level is recommended.
Recoletos Multidisciplinary Research Journal, 2021
English proficiency has been a complex skill to develop in a face-to-face setting, especially in ... more English proficiency has been a complex skill to develop in a face-to-face setting, especially in the remote learning modality. This descriptive-correlational study aims to determine the various macro and micro context factors in English language learning of secondary students (n=189) under modular distance learning. Factor analysis is utilized in extracting the following factor loadings for macro-context: a) lack of assistance from more knowledgeable others, b) unconducive-to-learning environment, c) cultural influence, d) poor feedback mechanism, e) insufficient resources, and f) low quality of the self-learning kit. Micro-context factors constitute the following: a) lack of exposure and practice, b) lack of perceived competence, c) lack of motivation and d) lack of interest. Students employed self-regulated strategies and managed to overcome these challenges through a) commitment to practice the skill, b) self-evaluation strategies, and c) social strategies. Students’ context shou...
International Journal of Learning, Teaching and Educational Research
A call for students to have a deeper understanding, so that they can make sense of and apply thei... more A call for students to have a deeper understanding, so that they can make sense of and apply their learning to authentic situations, has reverberated in science teaching in the Philippines. In response, educators, teachers, and policymakers have embraced contextualization as a constructivist approach to bridging the gap between concepts and real-life experiences. Considering the popularity of this approach, it is imperative to examine the overall effectiveness of contextualization in improving students' achievement at all educational levels and in all science domains, compared to the traditional setup. By using a set of inclusion selection criteria, 10 Philippine-based studies conducted from 2017 to 2020 qualified to be included in a meta-analysis. Seven of the studies focused on the secondary level and three on tertiary level. Studies were extracted from several meta-search engines, namely Google Scholar, Science Direct, ERIC, and JSTOR; the search was facilitated by Harzing...
Does Conceptual Change Process of Instruction Promote Scientific Understanding of Biological Evolution
Liceo journal of higher education research, 2020
This study investigated the teaching experiences of secondary science teachers on biological evol... more This study investigated the teaching experiences of secondary science teachers on biological evolution to promote conceptual change among their students. Descriptive phenomenological analysis was employed to explore the lived experiences of teachers (n=12) via a semi-structured interviews with the participants. Thematic analysis revealed six stages of conceptual change process of instruction of biological evolution, namely recognition, reinforcement, relevance, restructuring, reflection, and enrichment. These stages facilitated gradual conceptual change among students; however, students did not completely develop a sophisticated understanding of evolutionary concepts due to strongly held inherent beliefs and biases by their teacher and the lack of mastery of the concept. Strengthened teacher preparatory program, content enrichment, pedagogical retooling, availability of manipulative and audio-visual materials, and the supportive collegial group will help capacitate teachers to effec...
Antagonistic Activity of Metarhizium anisopliae (Metschnikoff) Against Phytopathogenic Fusarium oxysporum f. sp. cubense (Schlecht.) as a Biological Control
The search for the most effective, organic, biological control against fungal-related diseases of... more The search for the most effective, organic, biological control against fungal-related diseases of economically-important crops such as banana is still being encouraged in the Philippines. This study evaluated the antagonistic activity of beneficial endophytic fungi, T. viride and entomopathogenic fungi, M. anisopliae against F. oxysporum (causative agent of Banana Wilt disease) using dual culture method for 10 days incubation period. The study employed Complete Randomized Design (T1= T. viride vs. F. oxysporum; T2= M. anisopliae vs. F. oxysporum; and control plate = F. oxysporum alone) in five replications. Percent inhibition of radial growth (PIRG) and bell rating across treatment groups were analyzed using two sample T-test (p ≤0.05). Results showed that both biological control fungi (T. viride and M. anisopliae) manifested antagonistic activity against F. oxysporum, where T. viride registered stronger inhibition (PIRG=72.37%; Bell Rating=2) than M. anisopliae (PIRG=31.27%; Bell R...
Int. J. Biosci
Kyllinga nemoralis has been utilized for the treatment of various illnesses in developing countri... more Kyllinga nemoralis has been utilized for the treatment of various illnesses in developing countries because it is inexpensive and readily available but toxicity evaluation of this plant is still unreported in scientific publications. This study investigated the toxicity level of combined roots and leaves of K. nemoralis (40g) using Brine Shrimp Lethality Assay and Earthworm Assay. The study employed Complete Randomized Design in triplicates (n= 210 A. salina nauplii and n=126 E. euginiae). For BSLA, four K. nemoralis ethanolic root+leaf extracts [KNERLE] (T1=1000ppm; T2=100ppm; T3=10ppm; and T4=1ppm) were tested for toxicity while in earthworm assay, four K. nemoralis aqueous root+leaf extracts [KNARLE] (T1=25g/ml; T2=20g/ml; T3=15g/ml; and T4=10g/ml) were tested for time paralysis and mortality. After 24h experimental period, mortality data were analyzed using ANOVA (p<0.01) and post hoc analysis (Tukey’s test) while Probit analysis was employed to determine toxicity level of KN...
International Journal of Environmental Science & Sustainable Development
A place with clean water is worth living for, however, if it runs counter to the usual, it coroll... more A place with clean water is worth living for, however, if it runs counter to the usual, it corollary results in some diseases. This epidemiological study does not intend to give a false image on the Kawasan Waterfalls of Badian Cebu, Philippines rather, it aids to provide awareness among tourists to at least minimize anthropological activities that could contribute to water pollutants which cause an increased amount of heavy metals present in the water. With the collection of analyte and lab testing for the presence of cadmium, lead, and mercury in the aforementioned research environment, it was found that the water will not pose any health hazard to anyone in and around the river falls and even to any tourist in the place who wants to plunge into its azure water as far as cadmium and lead concentration is concerned. However, the mean concentration of mercury on the water projected a value, which is beyond the permissible concentrations and therefore may harm anyone in the community...
AIMS Environmental Science
Facilitating Instruction of Central Dogma of Molecular Biology through Contextualization
Journal of Teacher Education and Research
This descriptive research investigated the effectiveness of contextualized instruction of Central... more This descriptive research investigated the effectiveness of contextualized instruction of Central Dogma of Molecular Biology, a science concept difficult for students to understand and visualize. It aimed to promote mastery on this least mastered competency. It was administered to Grade 10 up-land students during their regular science lesson. Instruments such as pre/post-test questionnaires, performance indicator checklist of the central dogma of molecular biology processes, and attitude, interest, and behaviour inventory were employed to measure the effect on the three variables: understanding, performance, and engagement, respectively. Paired t-test was used to compare the pre-test and post-test results. Prior to the intervention, students had low conceptual understanding and manipulative skills. At the end of the contextualized instruction, a significant increase was observed. Respondents expressed a positively moderate level of engagement implying that their attitude, interest, and behaviour towards the lesson were enhanced by the approach. Pearson r-correlation was used to establish relationship among the three variables. Understanding and performance correlate with each other but not with engagement. Generally, the approach is highly commendable for science instruction, particularly genetics concepts, because students find the lesson relevant to them through various parameters of contextualized instruction.
International Journal of Environmental Science & Sustainable Development
Drinking water from Water Vending Machines (WVM) may pose health risks to consumers especially to... more Drinking water from Water Vending Machines (WVM) may pose health risks to consumers especially to students who are primary end-users in the public school setting. A one-shot survey of WVM water samples from 8 public schools in Cebu City Philippines was analyzed for microbial test and 3 schools were further investigated for physicochemical analysis. Results revealed that 8 water samples registered a total coliform count of 2.6 CFU/mL while specific E.coli testing posted (