The purpose of this study was to determine the effect of topic-specific pedagogical content knowledge-based instruction on grade 11 students' achievement in chemical kinetics and equilibrium. A quasi-experimental research design with a 4 × 2 * 3 pre-test and post-test control group was employed on Grade 11 chemistry students in Addis Ababa…

The economic crisis and the COVID-19 pandemic since 2019 forced both public and private schools in Lebanon to close for an extended period of time. Many topics were suspended from the curriculum due to decreasing the number of learning days. The predominant causes of learning loss are lengthy gaps or cutouts in students' education. This study aims…

Research Experiences for Teachers (RET) programs are a burgeoning approach to engage teachers in STEM (science, technology, engineering, mathematics) research that they can translate into their K-12 classrooms. Despite an increase in studies of RETs, there is a need for comparison of RET and non-RET teachers' student outcomes. This mixed methods,…

The current study expands on previous research on gender differences and similarities in science test scores. Using three different approaches -- differential item functioning, differential distractor functioning, and decision tree analysis -- we examine a high school science assessment administered to 3,849 10th-12th graders, of whom 2,021 are…

The purpose of this mixed-method study is to determine the effect of integrating Engineering design on high school students' scientific reasoning and science achievement. Thirteen eleventh-grade students participated in this eight-week long study. The intervention engaged students in the Engineering design of a functional Dialysis model. Students…

The technological, pedagogical and content knowledge (TPACK) framework was developed incorporating content, pedagogical and technological knowledge. Studies used TPACK constructs and reported on teachers' TPACK and student learning, but none explored the correlation between teachers' TPACK and the achievement of their learners. This research…

This study was conducted to determine the effectiveness of virtual laboratory based on semi second life (s-SL) on higher order thinking skills of general senior secondary school in chemistry learning process. The research design was adopted posttest only design approach to a quasi-experimental. This study was conducted in the one of public general…

The Ubiquitous-Physics (U-Physics) app was upgraded to help students in learning inclined plane concepts. The new version of U-Physics allows students to see the experimental data not only in a graphical representation but also in a tabular representation. U-Physics provides a whiteboard function to support data explanations. The study…

Students perceive chemistry as a complex subject resulting in low academic performance. Education systems shall support students in bridging the gap between traditional learning and online set-up using technology-based materials. The Electronic Strategic Intervention Material (E-SIM) is a new learning method to help improve the learner's…

Twenty-first century chemistry education researchers reported challenges in chemistry education pertaining to high school chemistry teaching-learning outcomes. Even though all studies intended to improve chemistry teaching-learning outcomes, unfortunately the impact of chemistry education research found not to be much encouraging. A few of these…

Although many studies are analyzing the effect of the STEM model on students' cognitive characteristics, it is known that there are not many studies conducted especially on its impact on students' conceptions of learning (COL), and it is thought that there is a need for these studies as well. It is necessary to determine how COL, which may vary…

Purpose: The integrated science, technology, engineering and mathematics (STEM) education has been reported to improve students' science achievement. Nevertheless, few studies have focused on how this approach affected different ability groups. Lack of equity or the presence of achievement gap can be detrimental because they can reduce medium and…

Context-Based Learning (CBL) and learning through developing and using models are two important teaching approaches for chemistry conceptual understanding. We aimed to examine the influence of a CBL approach on students' understanding of Multiple Models of Knowledge Representations ("MMKRs") and "multiple molecular…

This report leverages state educational agency data to explore the association between Alabama Science in Motion (ASIM) implementation and student outcomes. We conducted this study in Alabama to evaluate the potential of teacher implementation of ASIM lab activities to improve high school level student achievement in science. This study follows a…

Science performance is highly affected by students' reading comprehension. Recently, there has been a growing attention to the role of linguistic features for science performance, but findings are ambivalent, especially when looking into item word count. The aim of this study was to investigate the interaction of students' reading comprehension…