We propose an innovative approach to teaching friction. Our approach aims to educate students on its microscopic nature by highlighting its origin in intermolecular interactions. We have designed a teaching sequence (TS) based on a set of experimental investigations of the properties of a gecko-inspired tape at different length scales. The TS has…

An underlying goal in most chemistry curricula is to enable students to think like chemists, yet there is much evidence to suggest that students can learn to solve problems without thinking conceptually like a chemist. There are few tools, however, that assess whether students are learning to think like Ph.D. faculty, putative experts in the…

A hands-on approach to introduce the chemical elements and the atomic structure to elementary/middle school students is described. The proposed classroom activity presents Bohr models of atoms using common and inexpensive materials, such as nested plastic balls, colored modeling clay, and small-sized pasta (or small plastic beads).

Paper-based microfluidic devices (µPAD) are a burgeoning platform of microfluidic analysis technology. The method described herein is for use in undergraduate and high school chemistry laboratories. A simple and convenient µPAD was fabricated by easy patterning of filter paper using a permanent marker pen. The usefulness of the device was…

The construction of a simple volumetric adsorption apparatus is highlighted. The setup is inexpensive and provides a clear demonstration of gas phase adsorption concepts. The topic is suitable for undergraduate chemistry and chemical engineering students. Moreover, this unit can also provide quantitative data that can be used by young researchers…

A liberal education curriculum requires discipline-specific courses that develop intellectual and practical skills. With this promise of development, it is crucial that instruction focuses on content knowledge as well as the thinking patterns associated with the content. In chemistry, scientific reasoning is one such skill that students should…

A new approach for teaching general chemistry is presented and discussed. Importantly, a storyline approach is provided in which the same chemical item or concept is reintroduced and embellished from chapter to chapter. The intention is to bring more connectivity between the various seemingly unrelated chapters. This might lead to a more…

Reports research into the design and application of physical and mental practice strategies for the development of laboratory psychomotor skills of freshman chemistry students (N=360). Design of instruction materials used (focusing skills using balance, pipet, and buret and skills in quantitative volumetric analysis), evaluation of strategies, and…