This document discusses counterfeit money and the legal consequences of using it. It notes that counterfeit money is illegal and can result in jail time. Several examples are provided of individuals who were jailed for using fake currency. The document encourages saving and budgeting as better alternatives to obtaining money. It also provides guidance on identifying security features of genuine Singapore notes to distinguish them from counterfeits, such as watermarks and varying ink shades. Students are tasked with designing their own classroom currency, and including security features to prevent counterfeiting.