This paper describes an undergraduate biochemistry laboratory module consisting of a set of experiments designed around a purification scheme for bovine serum albumin (BSA). Students purify BSA from cow plasma by a combination of salt and acetone precipitation, equilibrium dialysis, ion exchange, and size exclusion chromatography. Students use the…

Peer learning has become a central feature in many postsecondary classrooms. Many peer learning activities feature near-peer instructors who had previously completed the course and who later serve as peer leaders. There are relatively few examples of activities in which students in a course act as true peer instructors for their classmates. One…

Help-seeking is an essential tool for student success. Still, students, especially those underrepresented in STEM (UR-STEM) and those underrepresented in chemistry (UR-Chem), may be reluctant to employ help-seeking for academic success. Understanding help-seeking in online courses is crucial for developing equitable learning environments where…

Problem solving is a critical skill in many disciplines but is often a challenge for students to learn. To examine the processes both students and experts undertake to solve constructed-response problems in genetics, we collected the written step-by-step procedures individuals used to solve problems in four different content areas. We developed a…

The ground-breaking image of a black hole's event horizon, which captured the public's attention and imagination in April 2019, was captured using the power of interferometry: many separate telescopes working together to observe the cosmos in incredible detail. Many recent astrophysical discoveries that have revolutionized the scientific…

Making meaning with math in physics requires blending physical conceptual knowledge with mathematical symbology. Students in introductory physics classes often struggle with this, but it is an essential component of learning how to think with math. Teaching the dimensionality of measured quantities and dimensional analysis (DA) is a valuable first…

Biochemistry curricula present a particular challenge to undergraduate students with abstract concepts which can lead to misconceptions that impede learning. In particular, these students have difficulty understanding enzyme structure and function concepts. Targeted learning activities and three-dimensional (3D) physical models are proposed to…

Undergraduate courses on the nature of science (NOS) often involve teaching a set of core elements. Without extensive unpacking and reflection, the complexity of those NOS elements could be easily misinterpreted and oversimplified by the students. Our paper will explain how we teach our Hong Kong university students the NOS by introducing…

Learning progressions (LPs) present a potential tool to guide students toward deeper understanding of core concepts as they move through a curriculum. In addition to providing a theoretical scheme for education researchers, LPs can provide a powerful framework for instructors and students in organizing curricula. We have developed the outline of a…

The contamination of wastewater with metals and the use of biotechnologies to remove them is commonly discussed in theoretical biology, microbiology and biotechnology classes aimed at undergraduate students. This work introduces an easy, economical and safe practical laboratory class related to this topic. The practice consists in performing batch…

This study is a comparison of ground-based versus online student performance using a combination of common final examination scores and associated demographic data in a biological science college course taught by a single instructor. Multivariate and standard statistical analyses are used to examine data from five semesters of ground and online…

The laboratory experiment regarding esterification of ethylene glycol with acetic acid to ethylene glycol diacetate using resin catalysts in a continuous flow was designed to carry out the reaction in a flow through an inquiry-guided approach. Incorporating the burgeoning field of continuous flow chemistry into the educational infrastructure, the…

As green chemistry and engineering are being integrated into chemical processes in academia and industry, it becomes equally important to equip students with the relevant tools in the fields of sustainable chemistry and processes. In this context, continuous flow technology has been identified as one of the promising strategies. Herein, we…

In a chemistry course for students not majoring in science, there is more to learn than some memorized facts: the student can find, in most non-major chemistry texts, the definition of atomic number, something about chemical bonding, and names of some classes of chemical compounds. Where facts come from and how accurately they are known are often…

Recent trends toward engaging undergraduate biology students in scientific investigations have shifted focus toward helping students understand and use scientific evidence. Instructors must promote students' evidentiary reasoning as they generate, use, and evaluate scientific evidence during the investigations. However, explicit guidance is needed…