Background: Recent literature indicates that the trend towards investigating pre-service elementary teachers' conceptual understanding of science concepts they are expected to teach and their command of that content-specific conceptual understanding is gaining momentum in science education. Purpose: The purpose of this study was to investigate…

Osmosis and diffusion are fundamental topics in science education because many processes in nature largely depend on these phenomena. However, many students usually hold misconceptions and have a lack of knowledge about these topics. This study explores pre-service teachers' understanding of osmosis and diffusion in relation to their prior formal…

In this article we present a simple technique for determination of the Young modulus of the material of a metallic ruler using it as a cantilever. This method employs with a slide potentiometer and a digital multimeter. The linear region of potentiometer resistance which is calibrated in terms of length has been used to record the load vs.…

The refractive index of a liquid is known to depend strongly on the temperature gradient of liquids. When a laser beam passes through a transparent material going through thermal diffusion, the light projected onto a screen will be displaced in relation to the thermal diffusivity. A simple apparatus is used to measure the time evolution t of the…

Difficulties presented by students on the concept of instantaneous velocity are well known. This is in part due to instantaneous speed being often defined in terms of the notion of mathematical limit, which may not be clear to many students in introductory physics courses. In this work we present a complementary teaching proposal that can help…

Granular flows appear frequently in the natural world and in civil engineering applications. These flows can exhibit features which are surprising and counter-intuitive and are often used to test the limits of the classical continuum approximation for modelling of fluid flows. An important sub-class of the granular flows are the gravity-driven…

We present an experiment designed to study standing waves in a tube with one closed end. Two smartphones are used, one to emit a sound signal with a chosen frequency and another equipped with a microphone to detect the sound pressure level inside the tube. Due to the finite diameter of the tube, the standing wave node (or antinode) appears…

A virtual Game-Based Tournament of Chemistry was developed as an alternative to the traditional problem-solving classes to aid students in reviewing and understanding organic acidity and basicity concepts. The tournament was based on a multilingual virtual board game (English, Portuguese, French, and Italian) which aimed to facilitate students'…

In the past few decades, chemistry has evolved to interact with various disciplines to synergistically help tackle global challenges. This, in turn, requires that newer generations of chemistry students are trained to be more flexible in accepting and coordinating new concepts. In this experiment, pineapple was used as a key model to allow for the…

With fewer people entering agricultural career fields every year, the need for skilled workers in STEM fields continues to grow, which is an issue compounded by the growing demand for food and energy worldwide. An employment pool of skilled applicants who understand agriculture as a whole and comprehend applied concepts of STEM is needed,…

Laboratory activities are a prevalent and essential part of chemistry learning because of their potential to help students develop problem solving abilities, visualize chemistry concepts learned in lecture, and gain practical skills. However, learning in the laboratory environment is not without its challenges. For example, cookbook-style…

Organic chemistry has been stigmatized as an unduly challenging subject throughout history. However, some undergraduate students excel in the subject when they attempt to understand the content rather than routine memorization. It is evident that rote memorization, a primary result of a student failing to understand the relevance of the material,…

Game-based learning has been shown to promote active learning. We have designed a card game termed CountQuest, played on the online platform Zoom, to facilitate the revision of the effective atomic number (EAN) concept for metal complexes previously taught in lectures. This game was played by undergraduate and graduate chemistry students during…

This article describes the design and implementation of an independent at-home chemistry project for a high school student. The pedagogical process described herein provided an authentic and meaningful laboratory experience at home, enabling remote learning that was inexpensive and safe. The topic of study was osmosis, and experiments were…

We describe a project implemented in the honors section of an upper-level analytical chemistry undergraduate course, in which students designed an experiment to compare the performance of two analytical techniques to determine the amount of ascorbic acid in a commercial sample. This project designed for 18 students is composed of three stages. In…