The essence of university courses lies in their scientific rigor, while the enjoyment of learning serves as a motivation. In this regard, we have developed a comprehensive experiment project by incorporating dithienylethene-based photochromic units into sensitizers for renewable energy, specifically dye-sensitized solar cells, through organic…

With the increase of waste paper, environmental pollution and atmospheric impact have become global problems. The cellulose contained in waste paper has the advantages of being renewable and biodegradable and can be applied to many fields to achieve sustainable development. At present, thermal management materials, as a new type of material, have…

This paper examines the pedagogical integration of Virtual Microscopes (VMs) in Virtual Learning Environments (VLEs), to identify best practice and improve online pedagogy. It has captured the perspectives of 12 Health and Earth Science university teachers, through in-depth interviews, about the current integration of the VM in online teaching,…

Community, inclusion, and perseverance are essential for student success in STEM. To promote these values, we developed two discussion-based activities for implementation in introductory college STEM courses. Both activities incorporate watching videos that portray scientists telling the stories of their career trajectory, in-class discussions,…

There are conditions that lead professors to use different text formats in quantum physics courses. Studying these conditions is an important aspect to understand the dynamics of physics pedagogy, and philosophy of science can be used as an orientation to do so. A case study was conducted at a Brazilian initial physics teacher training program.…

While environmental problems are urgent in modern society, they are especially difficult to tackle because of their normative and politically controversial nature. Universities may choose different theoretical paradigms for the teaching of environmental problems. However, limited theoretical and/or practical analysis has been undertaken of the…

This 4-year longitudinal study identified the impact of a multifaceted mentoring and tutoring program on the retention and graduation rates of a diverse body of undergraduate college students enrolled in high-risk science courses. Findings revealed that the program was successful in increasing the retention and graduation rates of students who…

Despite continued efforts to address this issue, many students still exhibit misunderstandings regarding Newton's laws. These misconceptions include beliefs, such as every movement requires a force, that force is directly proportional to velocity, and that action-reaction forces can differ in magnitude. To mitigate these misunderstandings,…

Background/purpose: The students have difficulty understanding abstract concepts that are sometimes difficult to visualize in optics and physics, so learning innovations are needed to overcome these problems. Case-Based Learning (CBL) optical physics learning integrated with mobile microlearning offers an innovative approach to improving the…

Online learning in higher education has grown significantly over the past decade, with millions of students engaging with online learning tutorials and assessments. However, the effectiveness of online learning is less understood, particularly whether students achieve the same learning gains when taking online assessments at home versus in a…

Despite chemistry's recognized importance to multiscale industrial and environmental processes, first-year undergraduate chemistry is often regarded as comprising a collection of unconnected topics with little relevance to everyday life. Implementing systems thinking into the chemistry curriculum can help to contextualize chemistry learning and…

Semimicro pressure filtration is carried out by pressurizing a suspension through pushing the piston of a gas-filled plastic syringe whose needle perforates the closure of a cylindrical filter funnel. Basic features as well as pros and cons of vacuum and pressure filtration are pointed out and compared to support rational choice between the two…

This is an easy and inexpensive laboratory experiment in which undergraduate students at the Bachelor's degree level in Chemistry can measure formation constants of complexes [Ni(en)[subscript n](OH[subscript 2])[subscript 6-2n]][superscript 2]+ (n = 1, 2 or 3; en = ethylenediamine) through an acid-base titration. The background information…

Elemental analysis is performed in a variety of ways in food and environmental sciences; thus, we have designed an activity in which students gain experience with research-level lab techniques in a real-world context through the quantification of key elements in breakfast cereals using microwave plasma optical emission spectroscopy (MP-OES). The…

A multistep synthesis of a novel arylidene 3­(2"H")-furanone has been designed and optimized for the second-year organic laboratory. The three-step sequence consists of a nucleophilic substitution, intramolecular cyclization, and acid-catalyzed aldol condensation, and can be carried out within two 3 h laboratory periods. The final…