The contamination of wastewater with metals and the use of biotechnologies to remove them is commonly discussed in theoretical biology, microbiology and biotechnology classes aimed at undergraduate students. This work introduces an easy, economical and safe practical laboratory class related to this topic. The practice consists in performing batch…

There is a consensus that the content of education for sustainability should be integrated into the curriculum, engaging students in activities that promote awareness and practice of sustainability. To achieve this goal, it is essential to adopt a student-centered approach that involves creative, stimulating, and challenging activities. This…

A glass filled with carbon dioxide gas upside down on a plate of water constitutes an excellent demonstration of the solubility of gases. If the water level on the plate is maintained the CO[subscript 2] will slowly dissolve and the column of water will rise inside the glass, without quite reaching the ceiling, before an opposite process sets in:…

The long and complex history to define the composition of water as H[subscript 2]O is summarized. This case study could be useful not only to introduce the history of chemistry in the classroom but also to teach the basic tenets of the nature of science (NOS). Water has been present in several turning points in the history of chemistry such as the…

The non-SI unit sverdrup, named to honor Norwegian oceanographer and meteorologist Harald Ulrik Sverdrup (1888-1957), is adopted for quantifying large-scale volume transport by oceanographers, meteorologists, and atmospheric physicists. The sverdrup is used to appraise the volumetric rate of evaporation, precipitation, runoff, transport of ocean…

One of the most popular demonstration experiments pertaining to Bernoulli's principle is the production of a water spray by using a vertical plastic straw immersed in a glass of water and a horizontal straw to blow air towards the top edge of the vertical one. A more general version of this phenomenon, appearing also in school physics problems, is…

Purpose: This study explores whether farmers across England believe that advice on diffuse water pollution from agriculture (DWPA) which is currently provided for free at the point of delivery is credible, relevant, and legitimate ('CRELE') enough to justify paying towards. Methodology: A mixed-methods study consisting of an online questionnaire…

This study examines the development of the concept of the ecological niche among 10-11-year-old students and their ability to use this concept to give their opinions on the socially relevant and controversial possibility that wolf populations might be established in the mountains surrounding the school. A total of 21 elementary school students…

This study examines the efficacy of a novel college sustainability course in promoting relevant environmental knowledge and interest in careers related to environmental aspects within the Taiwanese educational context. The core content of the course covers the essential concepts of sustainability and introduces students to environmental issues and…

Complex systems affect every part of our lives from the ecosystems that we inhabit and share with other living organisms to the systems that supply our water (i.e., water cycle). Evaluating events, entities, problems, and systems from multiple perspectives is known as a "systems thinking" approach. New curriculum standards have made…

Water can exhibit many different colors due to a variety of physical properties. Here, we focus on some observable colors within very pure freshwater. We only treat the absorption of light due to electronic and ro-vibrational excitations and scattering due to refractive index fluctuations of the water and the respective consequences for the…

Adventure expeditions are characterised by their unique temporal and spatial separateness from the quotidian and their exploratory and oft times risky nature. As such they offer a multitude of possibilities in research terms for the inquisitive investigator. Few studies however have considered the researcher's experience of exploring such…

This study addresses intergenerational learning processes in informal settings by investigating families engaging in science talk and practices during a water quality science workshop led by local science experts. As part of a larger design-based research study, this analysis examines how modified Think-Pair-Share discussion prompts within the…

In 2021, more than 80 million people worldwide will have been forced to flee their homes. Upon arrival in their new country, families may endure numerous hardships, yet succumbing to these challenges is not their single story. To understand how migrant-background and refugee-background children imagine more liveable futures beyond social and…

This study examines factors affecting teachers' motivation at secondary schools in the Elliotdale Circuit. The research approach adopted was qualitative. The design used was a case study. The purposive sampling technique was used to select a sample size of twenty-two (22) respondents, which comprised principals, teachers, subject advisors and…