During the time of the COVID-19 pandemic, online teaching was implemented by teachers in almost all education areas, and various technological tools were also employed to improve teachers' online teaching effectiveness. Based on this, the current qualitative case study aims to explore chemistry teachers' experience during online teaching in…

In addressing the need for safer and more accessible chemistry lab procedures, this work integrates green chemistry and small-scale chemistry concepts to serve as a laboratory model for both qualitative and quantitative analyses of iron(III). An aqueous extract of Indian gooseberry is utilized as a natural reagent to form a complex with iron(III),…

This study used a three-phase design to explore how teachers' views and practices of scientific inquiry can be reconciled with early graders' ability to engage in scientific inquiry. First, 19 early years teachers were interviewed to explore their views and practices of scientific inquiry. Second, six standard two students were exposed to a…

Improving students' STEM competencies is important and relies on fine-grained assessments, however, assessing scientific inquiry in an authentic, automated way is challenging for a number of reasons. Here, we provide an overview of how the learning sciences and computational sciences were used in the design and development of Inq-ITS and its…

BrainPOP Science is a research-based program that has been shown to be effective in improving and quickly developing students' scientific reasoning skills. This white paper presents a comprehensive case study conducted in school districts in the Southeastern United States. BrainPOP Science is one of the leading supplemental middle school programs.…

This dissertation asks how to improve science education and science communication, and suggests that digital storytelling techniques can be used to better engage learners in the process of knowledge making. Digital storytelling refers to both the use of high-quality digital media content as learning materials, and also to the use of social…

The frequently used analogy of a massive ball distorting an elastic sheet, which is used to illustrate why mass causes spacetime curvature and gravitational attraction, is criticized in this article. A different analogy that draws on the students' previous knowledge of spacetime diagrams in special relativity is suggested.

For more than 30 years, Albert A. Bartlett published "Thermal patterns in the snow" in this journal. These are patterns produced by heat sources underneath the snow. Bartlett's articles encouraged me to pay attention to patterns in snow and to understanding them. At winter's end the last snow becomes dirty and is heaped into piles. This…

A laboratory experiment is described in which students synthesize silver nanospheres and transform them into other anisotropic morphologies (decahedral and disks) through a photochemical process. The photochemical transformation was followed by visible spectroscopy, and the resulting morphologies were analyzed using scanning electron microscopy.…

From a physical point of view, the "partial pressure" of a component "i" in a gas mixture is defined as the contribution of molecules "i" to the force per unit area that the molecules of the mixture exert on the wall. The relation pi = x[subscript i]P (where x[subscript i] is the mole fraction of "i" and…

This article aims to introduce the actinides and some aspects of nuclear chemistry to teachers and their students. The actinides are a group of f-block elements with atomic numbers from 90 to 103. (The term 'actinoids' encompasses both the actinides and actinium itself). All of the actinides are radioactive but they also have a rich inorganic…

All analytical techniques are governed by the principles of physical chemistry, and chromatography is certainly no exception. By examining the underlying concepts of size exclusion chromatography (SEC), students can gain greater appreciation of and insight into the science and utility of thermodynamics, as well as solution properties of…

"Skyscraper" is a Hollywood action film ("Skyscraper" official film site: www.skyscrapermovie.com) directed and written by Thurber scheduled to be released on 13 July 2018. We present an analysis of the feat shown in the recently released teaser poster and trailer of the film. Although the feat appears to be unrealistic at…

Most physics instructors believe that adequate sleep is important in order for students to perform well on problem solving, and many instructors advise students to get plenty of sleep the night before an exam. After years of giving such advice to students at Loyola Marymount University (LMU), one of us decided to find out how many hours students…

This is essentially how I start my class each year. As educators we know that the primary way to ensure content retention is to connect the information to the students' lives in a relevant way. Thankfully, as physics teachers, we teach the subject that explains nearly every natural phenomenon in the world…and outside of the world, for that matter.…