2 results found.
Bonding Nature of Science (NOS) and Nature of the Sciences (NOTSs) with Conceptual Knowledge: Introducing NOS and NOTSs Learning Objectives into the Teaching of ‘Homeostasis’
Interdisciplinary Journal of Environmental and Science Education, 2022, 18(4), e2298, https://doi.org/10.21601/ijese/12311
ABSTRACT: The present study aims to design an instruction that engages nature of science (NOS) and nature of the sciences (NOTSs) learning objectives with the teaching and learning of a core biological concept or ‘big’ idea, namely homeostasis. The design process involves choices regarding what NOS and NOTSs aspects are to be taught, while the formulation of these aspects is in accordance with science-content learning objectives, such as the understanding of definitional features of homeostasis and human thermoregulatory mechanisms, and difficulties that students face in accomplishing these objectives. Through NOS and NOTSs learning objectives, students are expected to be informed of (a) the theory-laden character of scientific knowledge, (b) the hierarchical organization of primary ontological levels, (c) a model focusing on aspects of biological causality (d) definitional and accompanying features of the notion of mechanism, and (e) how to search for finding mechanisms including the interrelation of structure and function. Moreover, students are instructed in elaborating on their causal reasoning through a model and a metaphor (e.g., air-condition) when considering human thermoregulatory mechanisms. The potential benefits of the teaching of all these items to students’ understanding of homeostasis are also discussed.
A Gender-based Investigation of Indian Senior Secondary Students’ Misconceptions about Plant Reproduction through Concept Inventory
Interdisciplinary Journal of Environmental and Science Education, 2022, 18(4), e2287, https://doi.org/10.21601/ijese/12089
ABSTRACT: The central objective of this study was to unveil the misconceptions and their sources through the responses of Indian senior secondary (n=102; 54 boys and 48 girls) students about plant reproduction. A concept inventory with correct and incorrect statements was designed to elicit the misconceptions among class XII students. A semi-structured interview of selected students followed this exercise to report the sources of misconceptions from students’ perspectives. Descriptive statistics like mean and percentages determined the extent of misconceptions through frequencies of incorrect responses–overall, 40.392% of students bore misconceptions in this sub-concept with statements like “no difference between vegetative propagation and vegetative reproduction” getting a higher frequency of incorrect responses. Gender-based differences were investigated through inferential statistics like Chi-square and Kruskal-Wallis tests, more misconceptions were observed in boys than girls in plant reproduction. Qualitative analysis of the interview responses revealed the ambiguities in everyday classroom transactions and textbook explanations as to the major sources behind misconceptions. The study concluded with suggestive measures–and possible pedagogical tools–to help teachers identify and eradicate student misconceptions.