The flue gas from waste incineration power plants contains high-level zinc species that may deactivate the catalyst for selective catalytic reduction (SCR) of nitrogen oxides (NO[subscript x]) with NH[subscript 3]. A comparison experiment was designed to investigate the effect of different types and Zn/Ce molar ratios on the performance of…

Due to the COVID-19 pandemic, many universities have switched to online learning platforms, which inhibits engineering students from completing formative hands-on experiments. To address this, we developed at-home experiments for an undergraduate biomaterials course. These inquiry-based learning experiments were well received by students and…

The objective of this paper is to establish comparisons between the Linear Algebra (LA) approach practiced in Engineering courses offered by Chilean and Brazilian Higher Education Institutions and, for that, teachers from both countries were interviewed. From a methodological point of view, the research consists of two case studies. For the…

Complex problem solving is one of the skills desired in the 21st century workforce. Students can improve their problem-solving skills by working on homework problems, and creating new problems can be a stimulating and inventive exercise for student as well. Our previous studies explored the impacts of a novel homework pedagogy where students…

Engineering design is an ideal perspective for engaging students in college science classes. An engineering design problem-solving framework was used to create a general chemistry lab activity focused on an important environmental issue--dead zones. Dead zones impact over 400 locations around the world and are a result of nutrient pollution, one…

In undergraduate chemistry curricula that include computational modeling, students may gain first-hand experience in both introductory and advanced applications of this technique. However, although students can be exposed to the predictive power of computational work, its capabilities are often limited to determining the intrinsic properties of…

While zinc (Zn[superscript 2+]) is a vital ion for cell function and human health, we are still learning about how Zn[superscript 2+] concentration and localization is regulated and the role that Zn[superscript 2+] fluctuations may play in regulating cell signaling and cell fate. Here, we use fluorescent tools to study the interaction between…

In this paper, we present three types of activity that we have observed during students' free exploration of a software called "Algodoo," which allows students to explore a range of physics phenomena within the same digital learning environment. We discuss how, by responding to any of the three activity types we identify in the students'…

Most rockets convert the energy stored in their propellant mass into the mechanical energy required to expel it as exhaust. The 'rocket equation', which describes how a rocket's speed changes with mass, is usually derived by assuming that this fuel is expelled at a constant relative velocity. However, this is a poor assumption for cases where the…

The development of proficiency in the practices used by scientists and engineers is considered an important student outcome of laboratory instruction. We developed tasks to assess students' use and development of selected scientific and engineering practices in the general chemistry laboratory using an adapted evidence-centered design approach. In…

Self-efficacy toward science learning has been shown to play a crucial role in determining students' motivation and achievements. Social cognitive theory proposes that positive and negative task outcomes affect mastery experiences from which self-efficacy develops. The current research examined whether prior level of self-efficacy would serve as a…

The authors developed a lesson for teachers to integrate chemistry and culinary arts, providing students with an opportunity to participate in three-dimensional learning, engage in science and engineering practices, and apply disciplinary core content and crosscutting concepts (Krajcik et al. 2014). The project involved five classes: three…

Spatial skills have a known beneficiary role in STEM students' academic success. This paper explores data relating to the role of spatial skills in electrical engineering problem solving which is a relatively under researched area. Data indicate a significant association between electrical engineering problem solving and spatial skills and a…

The research reported in this article represents a systematic, multiyear investigation of student understanding of the behavior of bipolar junction transistor circuits using a variety of different tasks to isolate and probe key aspects of transistor circuit behavior. The participants in this study were undergraduates enrolled in upper-division…

Traditional engineering textbooks are substantially limited by approaches relying on analytical solutions where most of the applications are described by differential equations without simple analytical solutions. An alternative is to design a textbook around computer-program-based simulations, where the simulations progressively evolve through…