This research paper aims to propose a novel didactic sequence inspired by an historical/epistemological study of the evolution of spectroscopy and in particular of colorimetry. The working principles of the historical color comparators and the visual color matching method, first proposed by Duboscq, stimulated us in the development of a five-step…

The "Forty Electronic Challenges" is a "discovery learning" and socio-constructivist science activity that has become rather popular in Canada. The article recalls its emergence and development. It discusses its theoretical underpinnings and how it fits into the existing literature. It then gives educators all the guidelines…

Racial biases, which harm marginalized and excluded communities, may be combatted by clarifying misconceptions about race during biology lessons. We developed a human genetics laboratory activity that challenges the misconception that race is biological (biological essentialism). We assessed the relationship between this activity and student…

We provide an update on the "electrochemistry designette" in relation to its pedagogical effectiveness to students and experiential learning. We have previously proposed that the designette be applied as an assessment tool to measure the students' competence on electrochemical principles through a series of objective metrics. Based on…

Electrochemistry, a key topic in introductory chemistry, is a topic that many students struggle with conceptually. Visual learning tools like concept maps allow the externalization of key concepts and the relationships between these concepts may aid in students' acquisition and retention of newly learned electrochemistry concepts. Partnering with…

This STEM research project asks middle school or high school students to work towards creating ecologically friendly packaging. Packaging that can be composted instead of thrown away and collected in landfills and oceans like plastics. This inquiry uses nanocellulose and focuses on water permeability. The fibers of nanocellulose can be dried to…

Electromagnetic (EM) waves are indispensable in modern telecommunications. Despite their essential role in modern technology, EM waves are considered to be an abstract concept by many students. In this activity, an inexpensive two-coil system was constructed in a teaching laboratory and used to demonstrate information transfer by non-sinusoidal EM…

This study aimed to elucidate the perceptions and mental models of 5th-grade secondary school pupils about shadows, solar eclipses and lunar eclipses through drawings. A total of 443 pupils studying at public schools in Afyonkarahisar participated in the study. It was conducted as a case study, one of the qualitative research designs. As a data…

In science education, learners' conceptions of scientists and their work are often assessed by the Draw-A-Scientist Test (DAST). Due to validity concerns, methodical literature demands the development of alternative instruments to measure learners' conceptions validly and efficiently. This study presents an instrument with 29 rating scale items to…

Many biology students struggle to learn about the process of meiosis and have particular difficulty understanding the molecular basis of crossing over and the importance of homologous pairing for proper segregation. To help students overcome these challenges, we designed an activity that uses a newly developed Chromosome Connections Kit® from 3-D…

In the study, the effect of Predict-Observe-Explain (POE) activities carried out within the scope of argumentation-supported learning method on the detection of the conceptual understandings of the pre-service science teachers about "Solutions: Dissolving-Melting" was examined. Based on this main purpose, a case study was applied in the…

In the present study, an experimental teaching material using a soundcard oscilloscope developed for science, technology, engineering, and mathematics (STEM) education considering the engineering viewpoint was applied to address student's misconceptions in the alternating current (AC) circuit topic in high school physics. Four experiments were…

The study aimed to investigate pre-service early childhood teachers' (PSTs) collective pedagogical content knowledge (cPCK) and personal pedagogical content knowledge (pPCK) on the knowledge used in scientific process (SP) through the content representation (CoRe) design, interview, and knowledge used in scientific process (KSP) forms. The data…

This study, whose purpose is to examine the effect of scientific discussion-oriented activities on eliminating misconceptions in the 'Change of Matter' unit, has been designed in accordance with the action research method. Action research is a research approach that is carried out by practitioners alone or with a researcher to understand and…

Germinating a seed is presumably the first experiment made by a child in his life. So, it has an important place both in child's scientific experience and understanding. Despite the significance of the experiment, the literature indicates that students possess various misconceptions related to the concepts of seed and seed germination. So, it is…