The study of coordination complexes in general and inorganic chemistry courses is facilitated by theoretical frameworks such as crystal field theory (CFT) and ligand field theory (LFT). The angular overlap model (AOM) is alternative approach that quantifies metal-ligand interactions based on the geometric configuration of a given complex. In this article, we present a web-based AOM application for the calculation of one-electron d-orbital energies and wave functions. This application is designed for classroom instruction in general and inorganic chemistry courses. Using the web interface of the AOM application, students are able to perform calculations and visualize results in real time. Practice problems, varying from simple to complex, are provided to facilitate classroom implementation.