3-D models for Chemistry Education

VSPER theory is a difficult concept to understand and a significant area of confusion in general chemistry classrooms. 2-D models are commonly used; however, they fail to take into consideration a molecules orientation in space, a key component in VSPER theory. The lack of clarity involving bond angles and alignment often leads to difficulty in conceptualizing the theory. The purpose of this project was to generate 3-D models of molecules from VSPER theory for classroom use with the intent to aid in the comprehension of the material. Free CAD was the computer software system used to generate a base and build simple molecules. The program, Avogadro, was used by a fellow research student to supply a model for more complex molecules for more advanced chemistry education. The LulzBot TAZ 6 3D Printer was utilized along with materials PVA and PLA. A preliminary focus of the project was generating test models to gain insight on the functionality of software, materials, and the printer itself. Numerous prints were performed with the intent to challenge the printer’s precision and fine-tuning settings. Additionally, a user-guide was formatted to provide a manual for future students to maximize the use of 3-D models in the classroom