An open-source repository of basic building block models design files for writing chemical formulas, equations, and ionic states are provided. Writing chemical symbols, molecules, and ions in their correct oxidation state or valency in chemical equations is an essential and integral part of learning. For a visually impaired student, it is very…

In this paper, we present a novel dynamical approach to teach circular motion. According to the principle of inertia, objects without external influences move in a uniform and straight way. With a kick, one can turn the motion towards one side. By successively continuing these turns, a complete circle can be reached. With the help of standard…

Earth's field nuclear magnetic resonance (EFNMR) spectroscopy offers students a unique opportunity to consolidate their understanding of NMR spectroscopic theory through hands-on practice with a simple spectrometer. A comprehensive, 6 h experiment is presented for the introduction of low-field NMR techniques, covering spectroscopy, relaxivity, and…

A laboratory experiment was developed that connects the interpretation of computer-generated models to the self-assembly of macrocycles. Students compare the reactions of terephthalaldehyde and isophthalaldehyde by reacting each with (R,R)-(-)-1,2-diaminocyclohexane. These isomeric systems serve as the foundation for a discussion about the impact…

This work describes the design, building, and testing of miniature, low-cost LED-LDR colorimeters for absorption-spectrophotometry experiments. It also describes using these colorimeters for simplified context-based-learning (CBL) activities in school teaching laboratories and for public-engagement events. The colorimeters are simple and robust,…

This article discusses a case study of a pair of students mentored by a physics teacher as they engaged in a long-term (15 months) engineering maker-based inquiry (EMBI), a mandatory part of these students' formal learning of physics at the advanced high school level. We conceptualize the students' engagement as participating in a particular…

COVID-19 has changed about every aspect of life including how we teach in higher education. Laboratory experiments vital for learning hands-on techniques are limited due to social distancing requirements and increased numbers of distance-learning students. The solution to loss of hands-on activities has been to compensate with virtual laboratory…

Sarah Bearchell is a science specialist working with primary-aged pupils and their families, with a passion for making science accessible for everyone. In this article she outlines how allowing children ownership of their hands-on activities leads to more engaged learning.

During the COVID-19 pandemic, Cooperative Extension professionals, like many others, were tasked with quickly adapting to accommodate limited face-to-face interactions. The pandemic necessitated that Extension educators leverage online resources to deliver tailored programming in informative and innovative ways while providing engaging, hands-on…

The physics that underpins modern technology is based on Einstein's theories of relativity and quantum mechanics. Most school students complete their compulsory science education without being taught any of these Einsteinian concepts. Only those who take a specialised physics course have the opportunity to learn modern physics. In 2011, the first…

The interaction between water and surfaces is observed in our daily lives and is used in laboratories to study materials properties, such as interfacial tension. Making the connection between fundamental scientific phenomena and everyday observations is a powerful method of highlighting the importance and relevance of science to the K-12…

Teaching emulsion polymerization is an important benchmark in undergraduate polymer courses. However, the introduction of hands-on experiments in undergraduate polymer laboratories is challenging: experimental time, reagents, and equipment involved are the primary restraints. We report a practical emulsion polymerization laboratory experiment for…

An experiment is described that uses easily obtained materials (glow sticks, chalk, and acetone or alcohol) to separate the dyes contained in glow sticks that actively emit chemiluminescent light. The experiment is very easy to carry out, making it amenable for students to perform in laboratory or outreach settings. The separation occurs fast…

We describe a novel experiment for high school students that uses gas chromatography (GC) equipment to demonstrate the principles of chemical quantitation in the context of fragrant compounds. A highlight of the work is the use of inexpensive equipment and tools accessible to the usual high school laboratory. The students use control samples,…

The stated purpose of this paper is to provide a simple and quick method to assemble pH electrodes using readily available materials. The present assembled electrodes are comparable with commercial pH electrodes, with accuracy for pH determination in the range 2-12. Furthermore, the constructed simple pH electrodes exhibit a fast and stable…