The study investigates secondary students' understanding of "orbital" and "electron cloud" concepts in different quantum contexts (for values of the ?principal quantum number n = 1 and n = 2) on the basis of their verbal and pictorial representations, evaluating also their consistency. Participants, which were 192 12th-grade…

The main purpose of this study was to investigate the consistency of pictorial representations of the atomic structure drawn by students on the basis of particular quantum numbers' characteristics. Participants were 192 students of the 12th grade of secondary Greek schools. This study's instrument, a paper-and-pencil assessment tool, included four…

Strategic Intervention Material (SIM) is an instructional learner material developed to enhance the academic performance of low-performing students. This study aimed to develop e-SIM and investigate its effect on the student's academic performance and learning motivation in Newton's Laws of Motion. The participants were 40 students from Grade 12…

The internet is prevalent in society today, and user-friendly web-based productivity tools are readily available for developing diagnostic instruments. This study sought to determine the affordances of a web-based diagnostic instrument on ionisation energy (wIEDI) based on the pen-and-paper version, the Ionisation Energy Diagnostic Instrument…

STEM education was a systematic teaching and/or learning process in the STEM fields and a positive correlation existed between STEM education, and the economic prosperity and power of a nation in the globalized world. In recent years, rising concerns have emerged about American STEM education. Many stakeholders wondered that whether the nation has…

This paper reports on an analysis of student conceptions in responses to explanation-type questions in a grade 12 (17-18 years) South African national physics examination. We were guided in our analysis of 921 examination scripts by a framework developed by Dagher and Cossman on types of explanations in science which enabled us to understand the…

In this study, students' understanding of chemical changes was investigated in relation to four individual differences, related to logical thinking, field dependence/independence, convergence and divergence thinking. The study took place in Greece with the participation of students (n = 374) from three grades (8th, 10th and 12th grades) of…

The "Condition of Education" is an annual report mandated by the U.S. Congress that summarizes the latest data on education in the United States. This report uses data from across the National Center for Education Statistics (NCES) and from other sources and is designed to help policymakers and the public monitor educational progress.…

The Condition of Education is a congressionally mandated annual report summarizing important developments and trends in education using the latest available data. The 2019 Condition of Education report presents 48 indicators on topics ranging from prekindergarten through postsecondary education, as well as labor force outcomes and international…

"The Condition of Education 2017" is a congressionally mandated annual report summarizing the latest data on education in the United States. This report is designed to help policymakers and the public monitor educational progress. This year's report includes 50 indicators on topics ranging from prekindergarten through postsecondary…

Empirical norms are a traditional and accepted tool for reporting performance. Other methods (e.g., statistical regression) are used more often in a research context to make conditional statements about performance given a certain demographic context. This paper illustrates a method for the construction of differentiated school norms and the…

In the spring of 1988, the Massachusetts Department of Education administered its second biennial assessment (the Massachusetts Educational Assessment Program), testing students in grades 4, 8, and 12 in reading, mathematics, science, and social studies. This report discusses the use of open-ended questions in one form of the science tests.…