Online chemistry simulations are effective at helping visualize and understand particle interactions; yet, we are still learning how to best use them in out-of-classroom setting to enhance student learning. This study investigates student learning derived from out-of-class usage of the Atomic Interactions PhET simulation which depicts the forces and energy changes as two atoms approach each other. This is important given the difficulties students have in applying the concept of energy changes associated with breaking and forming attractive forces in chemical reactions. This activity is designed to be an introduction to bonding through one of three different treatment conditions: (1) exploring the simulation directly using guided instructions; (2) watching an expert-narrated screencast using the simulation; or (3) watching an “enhanced screencast”, the expert-narrated screencast plus additional information related to breaking and forming bonds in chemical reactions. Analysis of pretest and follow-up answers show both the screencast and direct simulation use were successful in helping students learn. However, students who engaged with the enhanced screencast were twice as likely to correctly identify the energy changes involved in ATP hydrolysis. Eye-tracking indicated that watching the screencast and not directly interacting with the simulation had no negative impacts student ability to effectively use the simulation on their own in answering subsequent questions.

Use of simulations and screencasts to increase student understanding of energy concepts in bonding

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.