This lesson presents an introduction to the doctrine that the performance of a pre-existing duty, or a promise to perform such a duty, does not constitute a sufficient consideration to make a promise binding. Through questions based on a series of hypothetical cases, underlying reasons for the doctrine are considered, as well as its ramifications […]

This lesson explores discharge of a contract by modification, both at common law and under the UCC. It can be run either as an introduction to the study of modification or as a review after you have completed your study. via Modification | Center for Computer-Assisted Legal Instruction.