particulate nature
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2021 ◽  
Vol 17 (2) ◽  
pp. 152-166
Author(s):  
Unni Eikeseth ◽  
Kristin Elisabeth Haugstad

The particulate nature of matter (PNM) is central to learning science and is a difficult concept for both children and adults. The purpose of this study is to examine how teaching materials from an integrated science and literacy curriculum on the PNM affects communication between pre-service teachers. We were especially interested in examining communication during an activity phase and whether and how participants used PNM models. The interactions between participants were recorded with headcams and analysed using a framework developed by Mortimer and Scott in 2003. The findings revealed that the participants mainly described what they observed directly using scientific words and concepts, but they did not necessarily use PNM models or theoretical knowledge spontaneously. Research indicates that the ability to use knowledge at a theoretical level is key to understanding chemical concepts, so our study underscores the importance of explicitly asking participants to use models and theoretical knowledge.


2021 ◽  
Vol 20 (2) ◽  
pp. 305-315
Author(s):  
King-Dow Su

This research focuses on students’ higher-order cognitive skill (HOCS)-oriented learning to construct effective hierarchical thinking abilities in their chemical particulate nature of matter. For in-depth knowledge and profound understanding, this research deals with students’ positive developments towards HOCS with a special guidance to Marzanos’ taxonomy. The methodology starts from the retrieval and comprehension of HOCS-centered assessment instrument to students’ analysis and knowledge utilization of transitional performances. 326 participants were assigned to take natural science curriculum in 2019 academic year. With the help of 7 scholars’ implements, the importance of content validity and inter-rate reliability were constructed through instrument developments of students’ HOCS performances. All research results indicated that more distributions of HOCS thinking abilities reached up to the target response of 38.0% analysis task and 27.30% knowledge utilization in Marzanos’ spectrum. This research is beneficial and advantageous that students will be capable of additional learning efficiency in their multiple interactive engagements with academic resources and suggestions from instructors, researchers, and science educators. Key words: HOCS-oriented learning, knowledge utilization, Marzanos’ taxonomy, particulate nature of matter


Author(s):  
Suat Turkoguz ◽  
İzel Ercan

The study investigated the effect of visual anthropomorphic stories on students' understanding of the particulate nature of matter and their level of anthropomorphic discourse. The study was planned in a...


2020 ◽  
Vol 19 (5) ◽  
pp. 842-854
Author(s):  
King-Dow Su

To be familiar with micro and symbolic performances, students could work out more effective approaches of innovated techniques known as five hierarchical designs in chemistry equilibrium. However, the most frequently reported problem in students’ assessment of chemistry study is attributed to their poor skill recognizing basic concepts. The aim of this research was to construct the 6 test items to help undergraduate students assess their high-order and low-order cognitive skills as a deeper framework of particle representations. It takes a dynamic appeal for students to identify their profound understanding of cognitive skills in accordance with their potential performances of particle representations. In this research, students activate the test instrument to sustain their development of content validity and inter-rater reliability. The research results mark a different responsive engagement of both high-order and low-order cognitive skills in students’ total performances with the skill ratio score of 1:6 for conceptual recognition and analyses of micro and symbolic performances. All students’ micro and symbolic performances offer an indication for understanding their advanced cognitive skills in the particulate nature of matter. It is beneficial to improve new perspectives in the discussions and activity hierarchical designs in their chemistry equilibrium classrooms. Keywords: high-order cognitive skills, hierarchical designs, micro, symbolic performances, particulate nature of matter


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