Argumentative writing advances students' understanding of scientific concepts, ability to communicate, and scientific literacy. However, it remains unclear which components of argumentative writing drive such advancement. Further, most studies on argumentative writing have focused on students majoring in science, rather than in the nonsciences.…

Contrary to the situation at primary, middle, and secondary school levels, university science courses provide students with very few opportunities to reflect upon the nature of science (NOS). The first goal of this study was to provide evidence that the co-construction of evolutionary trees, an important component of university biology education,…

The present study examines the exemplification practices of a university biology instructor during a semester-long course. Attention is given specifically to how the instructor approaches "memorable exemplification"--classroom episodes identified by students as a source of memorable learning experiences. A mixed-method research approach…

Mathematics is used in the physical sciences to describe and model phenomena, resulting in a unique interface between mathematics and disciplines such as chemistry and physics. This paper focuses on themes emerging from a larger project that investigated how students understand and use mathematics in chemical kinetics, a field of study concerned…

Providing word banks for human anatomy and physiology lab practicals is uncommon because instructors want to avoid cueing effects, but there is little published data on their effects on student performance. In the 2016-2017 academic year, word banks were not provided for students taking lab practicals in Anatomy and Physiology I and II while in…

Guided inquiry is the practice of allowing students to come to their own conclusions about a set of data instead of verifying a known result using a given experimental procedure. Open inquiry takes this idea one step further by allowing students to develop their own experiment and then analyze the data to arrive at a conclusion. To expose upper…

Suzuki-Miyaura coupling reactions are well-known among the most versatile catalytic C-C bond formation reactions. Two different routes of C-C bond Suzuki-Miyaura coupling reactions for the undergraduate organic chemistry laboratory courses have been designed and explained. A two-step reaction involving a catalyst preparation as the first step and…

A new two-step experiment has been designed and developed for the curriculum of the Organic Chemistry Laboratory 2 (CHEM2240L) sophomore course at Xavier University of Louisiana, in New Orleans. Initially, cyclohexanol was converted to cyclohexanone using bleach as the oxidizing agent followed by the formation of the cyclohexanone oxime. However,…

In order to succeed in biochemistry, students must transfer and build upon their understanding of general chemistry and introductory biology concepts. One such critical area of knowledge is bioenergetics. Student misconceptions around energy and free energy must be addressed prior to learning more advanced topics, such as energy flow in metabolic…

Genome editing has widespread influence in many fields, including medicine, biotechnology, and agriculture. Despite their origins in chemistry laboratories, these techniques are currently under utilized in chemistry curricula. Introducing future generations of chemists to these emerging technologies is essential in chemistry classrooms. The…

The material of a standard second-year undergraduate organic chemistry class has been reorganized and reframed to emphasize the mechanistic connections between reactions and to clarify the language with which organic reaction mechanisms are discussed. Assessment of the results of this reorganization shows that student test scores do not decline in…

For undergraduate students to be prepared for graduate school and industry, it is imperative that they understand how to merge the theoretical insights gleaned through their undergraduate education with the raw data sets acquired through materials analysis. Thus, the ability to implement data analysis is a vital skill that students should develop.…

To prove that oxygen is irreversibly consumed in the blue bottle reaction, a manometer or a plastic bottle was used to show a permanent reduction in the gas pressure in a reaction vessel. This demonstration may be misleading because the change in gas pressure can be attributed to a number of other factors such as temperature change and involvement…

Nanoparticle Zn[subscript 2x] Cu[subscript 1-x] In[subscript 1-x] S[subscript 2] is a promising and safer alternative to lead- and cadmium-containing quantum dots. Students prepare Zn[subscript 0.44] Cu[subscript 0.78] In[subscript 0.78] S[subscript 2] quantum dots in a one-pot synthesis without an inert atmosphere and investigate how the color,…

The principles of chemical kinetics comprise one of the core topics that appear throughout chemistry. Standard kinetics lessons typically cover reaction rates and relative rates, rate laws, integrated rate laws, half-lives, collision theory, and the Arrhenius equation. They can also introduce a discussion of mechanisms as well, which may be the…