DNA extraction from strawberries is a well-known procedure that allows students to visualize DNA and to recognize that living things contain DNA (NHGRI 2018, Science Buddies 2013). In this article, the authors describe a modification to the traditional DNA extraction protocol that promotes student agency in experimental design and also emphasizes…

Researchers have consistently demonstrated that studying multiple examples is more effective than studying one example because comparing multiple examples can promote schema construction and facilitate discernment of critical aspects. Teachers, however, are usually absent from those self-led text-based studies. In this experimental study, a…

Supporting student engagement in science practices requires rethinking how classroom learning occurs, specifically in terms of the interactions that help students build their own knowledge. The types of student-driven exchanges fundamental to the science practice of argumentation differ greatly from traditional classroom interactions. To help…

When students of the of the physical sciences transition from school to university, they discover that knowledge of calculus is as vital as arithmetic, and that there is precious little useful information written without calculus. However, the lack of calculus in pre-university physics studies persists, especially in its application to the…

The purpose of this study is to examine the salient characteristics of the 'Question-Answer Process' (QAP) in senior high school chemistry class between pre- and in-service teachers. We first developed the 'Instrument of Question-Answer Process' (IQAP), and then, applied it to compare salient characteristics of QAP between pre- and in-service…

Ecological concepts are not a recent matter; international organizations have already increased their efforts to provide better environmental education and ecological consciousness, although despite these efforts, a lack of attitudes and concepts were detected in the northeast of Spain. We evaluated the acquisition of concepts related to…

The interactive generation of chemical-structure diagrams is an integral activity in the study of chemistry as well as in professional chemistry environments. For educational purposes in particular, the existence of suitable software tools free of charge is of great importance. Although a number of free chemical-drawing applications are currently…

Inquiry-based teaching aims to increase student engagement through the development of the hands-on, minds-on skills, such as critical thinking, collaboration, and communication, needed for the 21st century (The Partnership for 21st Century Skills 2015). This approach respects the complexities of the learning process, values the knowledge and…

Manipulative skills and abilities include skills in the handling and manipulation of materials and apparatus in the context of scientific investigation. Science teachers appeared to be struggling with the mode of assessment in making authentic evaluation of manipulative skills in laboratory. One of the contributing factors is due to lack of…

We propose to reconsider the well-known experiment about the interference of white light from a thin soap film by adopting as an illuminating source the RGB triad produced by a LED projector. The interference pattern shows up in a particularly fascinating way and it contains direct, essential information about both the wave nature of light and of…

This investigation aims to develop an interactive e-module chemistry magazine-based teaching material based on Kvisoft Flipbook Maker on thermochemistry for Senior High School grade XI/MA level. The research design is a development research (Research and Development) with Plomp's model. The object of the research is the e-module inter-addictive…

Purpose: This study reports on the effectiveness of using animated computer graphics to teach submicroscopic level science to secondary school (Form One) students. Method: A total of fifty-three secondary school (Form One) students of average spatial ability were selected to participate in this study. Three topics involving concepts at the…

The paper is framed within a broader research programme aimed at investigating how science education can enhance the formation of what we call future-scaffolding skills: the abilities to construct visions of the future that support possible ways of acting in the present with one's eye on the horizon. To this end, we designed a module (targeted at…

The comparative analysis of different meanings of Chemistry is carried out, taking in account philosophical, didactic, psychological and socio-cultural aspects. The issue is discussed in terms of the concurrent existence of two different subsystems referred both to Science and Education which can be found in presentations of chemistry knowledge.…

The relative speed concept was chosen since it is linked with the relative nature of motion and it is likely that the students would harbor many alternative conceptions about it. The research objective was to identify the various ways students conceive relative motion. Qualitative data collected in various forms of representation received a…