This study aimed to investigate the effectiveness of Pedagogical Content Knowledge-Guided Lesson Study (PCKLS) as an intervention to develop PCK competencies among teachers and consequently enhance student achievement in terms of conceptual understanding and problem-solving skills. Using quasi-experimental design, teacher competencies and student achievement in the PCKLS group and the conventional group were compared. In the PCKLS group, the intervention involved planning the lesson by the research team, teaching the planned lesson while PCK observations were made by the researcher and another teacher from the group, including a feedback meeting, implementing the improvements in the reteach stage of the lesson study cycle by another teacher from the research team, and, finally, revising lesson plans based on the consolidated suggestions for improvement. Analyses of data showed that there was a significant difference in the science teacher competencies of the PCKLS group teacher respondents compared to those of the conventional group. Also, student respondents showed a significant increase on mean scores in terms of conceptual understanding and problem-solving skills. Therefore, it was concluded that PCKLS was an effective method to develop the teachers’ PCK competencies and student achievement in terms of conceptual understanding and problem solving. This study recommends that this intervention be used across chemistry topics and in other science classes such as Biology, Earth and Environmental Science, Physics, and Mathematics.

Purpose: The purpose of this study is to determine the impact of an Inquiry-based Flipped classroom model on the conceptual understanding and science process skills of junior high school students in the Philippines. Method: A two-group pretest/post-test design was conducted on 55 Grade 9 students for the study. One group received instruction using the flipped classroom format while the other group serving as control was taught in the conventional format. A Conceptual Understanding Test (CUT) and a Science Process Skills Test (SPST) were used to measure the impact of instruction on the two groups. Independent samples t-test was used to determine if there was a significant difference between the groups while paired samples t-test was conducted on both groups to determine if the groups improved significantly after a 7-week intervention. Linear regression was performed to determine if science process skills was a positive predictor of conceptual understanding. Findings: Inquiry-based flipped classroom did not make students perform better than the non-flipped inquiry-based learning environment in the Conceptual Understanding Test (CUT) and Science Process Skills Test (SPST) except on one biology topic (non-Mendelian Genetics) where the Flipped Inquiry Group scored significantly higher than the control in the CUT. Students’ science process skills positively predicted their conceptual understanding in biology. Significance: Inquiry–based flipped classroom can be as effective as the non-flipped inquiry-based instruction in improving students’ conceptual understanding and science process skills but can be made even more effective depending on the content, the manner the content is uploaded and the choice of LMS for uploading the online content. The study also showed the importance of science process skills in enhancing students’ conceptual understanding in biology.

Introduction"What do I teach in my science lesson and how should I teach it?" is a question asked regularly by science teachers. It is a query as to content and strategy that will equip students with the skills necessary in making informed and thoughtful decisions on myriads of science arguments and environmental issues. AbstractThe study focused on media cartoons as a teaching strategy in Environmental Education. Specifically, it sought to determine the effects of media cartoons on the issue resolution skills of first year high school students. The study was conducted in La Salle Green Hills that had eleven sections in the first year high school level for the School Year 2009-2010. Two comparable sections being taught by the researcher were chosen as the groups for the study. Both classes met for 80 minutes per meeting, three times a week. The students were given a pretest and a posttest on both Issue Resolution Skills Test (IRST). The IRST measured the ability to provide solutions to various environmental issues and problems. A teaching strategy that included film showing, group dynamics, laboratory activities, and motivational games was utilized for the conventional group. Media cartoons that improve skills in issue resolution and conceptual understanding of topics on Environmental Education were introduced to the students in the experimental group.The scores in the pretest and posttest of the participants were tabulated and used to determine the significant difference of the students' mean performance in the media cartoons and conventional groups. The t-test was utilized in the treatment and analysis of data gathered. Findings reveal that exposure to media cartoons results to a significantly better issue resolution skills on environmental education topics than the conventional approach. The researcher observed that students actively engaged themselves in media cartoon activities that enabled them to make responsible actions and provide solutions to local and global environmental problems. Students had an active participation in sharing insights and opinions in evaluating the message of media cartoons.Based on the findings of this study, the researcher concludes that exposure to media cartoons significantly improves the issue resolution skills of students. The strategy provided a learning opportunity in a non-threatening setting that promotes students' skills of observation, formulation of hypothesis, and creativity. In this regard, the researcher encourages the use of media cartoons as an alternative teaching strategy as it improved the issue resolution skills of students. Learning activities in combination with environmental education methods can greatly enhance students' engagement with environmental and science issues.

This study reports on the status and correlations among environmental literacy (EL), locus of control (LOC), and future orientation (FO) of STEM students (N = 512). The EL results showed a low rate of students' Environmental Knowledge but high Environmental Skills. The LOC results revealed that students believed that they could best create environmental impacts through recycling yet least by advocating on the environment. They were also more inclined to considering distant outcomes or consequences of their actions rather than focusing on their immediate needs. The STEM students' academic background, convenience, and personal benefit among others might have contributed to correlation results of EL, LOC, and FO reported in this study. It is suggested that ample opportunities be given to students to improve their EL. This may include going beyond environmental theories and engaging students in authentic experiences to provide them with active roles in learning environmental topics. Moreover, these topics should not only be consistently integrated among the fields of sciences but also in other subjects making them interdisciplinary, meaningful, and relatable.

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