Abstract

Today’s educational challenges necessitate the creative use of digital technology to adapt an effective pedagogical approach in chemistry teaching. While various visualization tools have been developed to improve visual-spatial skills, previous studies on digital technology interventions provide limited findings and show moderate effects on students’ learning. Moreover, students still have misconceptions even after using three-dimensional models physically or virtually while learning chemical bonding. Therefore, this study investigates the effectiveness of the CHEMBOND3D e-module that integrates the web-based visualization tool, Molview, on the chemical bonding concept knowledge and visual-spatial skills between treatment groups and control groups. A pretest-posttest non-equivalent control group with a quasi-experimental quantitative design is used in the research. Pilot studies were conducted to verify the validity and reliability of the CHEMBOND3D Chemical Bonding Knowledge Test and Revised Purdue Visualization Test of Rotations. A total of 112 pre-university students from 10 schools in Sabah were selected based on the sampling method. The findings showed significant improvement in the chemical bonding concept knowledge and visual-spatial skills for treatment group students using CHEMBOND3D e-module compared to control group students using conventional methods. This provides new evidence of the potential of web-based application in learning microscopic chemistry concept in chemical bonding. These findings can facilitate further studies of other digital visualization tools such as virtual reality and augmented reality in support of learning complex chemistry concepts in reaction mechanisms and chemical equilibrium.

Highlights

  • Chemistry is a discipline in the field of science that investigates the macroscopic and microscopic matter, production and application of materials, and interactions between substances. Johari and Yusof (2002) found students used their five senses to describe something invisible to their naked eyes in understanding the complexity of abstract chemistry concepts

  • Several measures have taken to avoid issues that may affect the internal and external validity of the research. These include internal threats of maturation, history, testing, instrumentation, participant selection, mortality and social interaction

  • Independent sample t-test at a significant level αp=0.05 found no significant difference in chemical bonding concept knowledge between control and treatment groups (t(78)= -0.175, p=0.861)

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Summary

Introduction

Chemistry is a discipline in the field of science that investigates the macroscopic and microscopic matter, production and application of materials, and interactions between substances. Johari and Yusof (2002) found students used their five senses to describe something invisible to their naked eyes in understanding the complexity of abstract chemistry concepts. Johari and Yusof (2002) found students used their five senses to describe something invisible to their naked eyes in understanding the complexity of abstract chemistry concepts. Students’ minds and thoughts can be manipulated to reason logically, visualize and imagine to understand the concepts learnt. In understanding a chemistry concept, students should be able to integrate conceptual knowledge with visual-spatial skills to produce, maintain and manipulate an abstract visual image (Lohman, 1979). This skill is crucial for students to distinguish the mental image from real images through physical molecular models or representations on computer displays. Educators are aware of the importance of these skills, various studies show students have difficulty to visualize the shape and structure of molecules in chemical bonding because this capability requires high visual-spatial skills

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