Gentry created an Instructional Project Development and Management model intended to introduce both concepts and produces of the ID process and the supporting process. His model attends to what needs to be done and how some think is done during an instructional development project. Gentry’s model is accompanied by numerous techniques and job aids for completing the tasks associated with instructional development. According to Gentry, the IPDM model is intended for graduate, practing instructional developers, and teachers. However, the comprehensive description of the entire process and the accompanying tools for managing large project make it suitable for development large-scale systems
Gentry’s model is divided in to two groups of components: development components and supporting components with a communication components connecting the two clusters.