A laboratory exercise for the synthesis of a sulfonated styrene-"co"-maleic anhydride polymer and its application as a stain blocker on nylon-6,10, is described. The effectiveness of the sulfonated polymer to prevent the conjugate base of an acid dye from staining the polyamide is demonstrated. This experiment is designed for…

In this article, we use a simple lattice model to illustrate the concepts of entropy, free energy, and thermodynamic equilibrium from a microscopic perspective. These physical concepts are based on elementary knowledge of discrete probability distribution and weighted average. Calculations about this model involve basic algebra and counting, which…

This article describes a workshop to develop students' understanding of how to investigate a cross-disciplinary question that bridges science and history. The question 'Why did the "Titanic" sink?' is interpreted scientifically and then historically to help students to better appreciate the strengths and limitations of each discipline's…

Defining what is meant by 'life' seems, on the face of it, straightforward. But, as this article explores, once you delve below the surface you find that providing a definition that everyone agrees upon is nearly impossible. By first considering how biologists and philosophers of science debate the issue of defining life, the article then goes…

Principles of conservation are essential to the physical understanding of the universe. When thinking about its teaching, especially aimed at basic education, experimental activities can be great allies for its understanding. In this article, we present a demonstrative model using a fidget spinner arranged in a structure constructed using 3D…

To study the absorption of ultrasound in plexiglas we propose to use gadgets that are available to each student: an ultrasound humidifier, a liquid crystal display of a pad, a polaroid analyzer, a digital camera, a multimeter with thermocouple, and a stopwatch. These devices allow us to visualize a region in plexiglas where ultrasound is absorbed…

Although 20 states have adopted Next Generation Science Standards (NGSS), 24 other states have developed their own K-12 science standards based on the same National Research Council (NRC) Framework. Understanding what influences content standards developers, realizing the supports and impediments to implementation they foresee, and knowing their…

Spatial abilities have been correlated to anatomy knowledge assessment and spatial training has been found to improve spatial abilities in previous systematic reviews. The objective of this systematic review was to evaluate spatial abilities training in anatomy education. A literature search was done from inception to 3 August 2017 in Scopus® and…

Practical work is widely seen as an important element of the science curriculum. However, there is a long-standing debate about the educational aims of practical work and about why it is important. Aims suggested include the contributions that practical work can make to understanding, to the acquisition of professional and personal skills, and to…

Although teaching laboratories offer students the opportunity to act and think like chemists, in many cases students simply follow written procedures to generate predetermined outcomes. In recent years, there has been a movement toward inquiry-, problem-, and discovery-based learning. In a similar vein, the first-semester introductory organic…

STEM is about the integration of science, technology, engineering and mathematics. To teach STEM effectively, students need practical examples of subject integration. A good example is the use of an electron microscope in teaching physics and biology. An electron microscope is an instrument in which the operation depends on electromagnetism and…

There is so-called troublesome knowledge in every subject. There is various subject-specific research available on what these particular concepts are, as well as some examples of how to help students cross those thresholds. There is, however, a gap in the area of implementation, a more practical format for addressing student learning when there…

Oscillations and resonance are essential topics in physics that can be explored theoretically and experimentally in the classroom or teaching laboratory environments. However, one of the main challenges concerning the experimental study of resonance phenomena via forced oscillations is the control of the oscillation frequency, which demands an…

Despite the importance of organic chemistry to human health and quality of life, very few outreach programs have been successful in communicating this message. This contributes to negative public perceptions of organic chemistry and obscures the enormous advances in quality of life engendered by organic synthesis. New chemical outreach programs…

The design of undergraduate laboratory courses that provide meaningful research-based experiences enhances undergraduate curricula and prepares future graduate students for research careers. In this article, a course-based undergraduate research experience (CURE) laboratory module was designed for upper-division undergraduate biochemistry and…