We discuss an original study and two replications conducted over 18 years examining the impact of Teacher Study Group (TSG) in Vocabulary, a professional development (PD) approach for improving pedagogy and student learning. Study 1 focused on the design and development of the PD and included a small-scale randomized controlled trial to assess the…

The quasi-experimental, two-group (treatment and comparison), pretest--posttest study of metacognition, epistemological beliefs, and science content achievement explored the effectiveness of argument-based inquiry (ABI) instruction as opposed to traditional teacher-directed lectures and structured activities. Participants included 60 eight-grade…

The aim of this study was to compare the 5E learning model with traditional learning methods in terms of their effect on students' conceptual understanding of water subtopics. The participants of the study were grade 8 students of 2021 academic year. While 27 of them were randomly assigned to the experimental group, the other 27 were assigned to…

This study investigates the effect of grammar teaching by the intuitive method on student achievement and attainment through comparison with the effect of the direct lecture method on the same variables. The study used the pretest-posttest control group design, a quasi-experimental design under the experimental research method, by adopting a…

The aim of this study is to examine the effect of mobile learning supported science teaching on eighth grade students' Science, Technology, Engineering and Mathematics fields and Information Technologies Self-Efficacy and to determine students' views on this process. For this purpose, a quasi-experimental design with pre-test post-test control…

This study aimed to develop characteristics of the Genre-Based approach (GBA) via the Miro platform and to discover results on using this approach and the Gathering, Processing, Applying, and Self-Regulating (GPAS) process. The study employed experimental research using a true group pretest-posttest control group design with Grade 8 students…

This paper is a study on the grade 8 students' vocabulary achievement using word games. The study was conducted at Kiwalan National High School and aimed to determine the effectiveness of word games as a learning method in improving students' vocabulary achievement. The data was collected through questionnaires and was analyzed through percentage,…

The aim of this study was to compare the analytical thinking skills of the 8th grade students who received emergency distance and face-to-face education in a science course and to get student ideas concerning emergency distance education. An unequal control group model from the quasi-experimental models was used in the study. The study group…

Cognitive development of eighth-grade students, as identified by Jean Piaget, occurs during a time when many of them are transitioning between concrete operations and formal operations where the ability to think in abstract concepts becomes possible. Because of this period of transition, many eighth-grade students find difficulty in demonstrating…

Prompted by the challenges faced by teachers in balancing grammar and content in English classes, coupled with the poor English proficiency of rural Odia medium school students, the study aimed to devise an intervention that could balance content and grammar, thereby enhancing the grammar competency and content comprehension of eighth-grade…

Adaptive learning systems personalize instruction to students' individual learning needs and abilities. Such systems have shown positive impacts on learning. Many schools in the United States have adopted adaptive learning systems, and the rate of adoption in China is accelerating, reaching almost 2 million unique users for one product alone in…

The aim of this study was to investigate the effect of using dynamic geometry software (GeoGebra) on the eighth-grade students' conceptual understanding and the retention of learning regarding linear equations and slope. In this study, a quasi-experimental design with pre-test, post-test and delayed post-test was employed. This study was conducted…

This study investigated the effects of advance organizers on Taiwanese middle school students' English listening comprehension after they watched videos. The participants were 82 eighth-graders in Taiwan, and they were randomly assigned to one of three groups: a control and two experimental groups. Two language proficiency levels- low-to-medium…

Students with high incidence disabilities in the public school system often perform multiple grade levels below their typically developing peers in mathematics achievement. These students exhibit lower levels of on-task behavior that limits their access to effective instruction, thus requiring instructional interventions that personalize learning,…

Learners need to possess scientific literacy in order to be able to analyze and explain scientific concepts and solve daily life problems. The current study aimed to analyze the potential of the Socio-Science Spirituality learning model to improve the scientific literacy of students at the junior high school level. The sample of this research…