Waste is any substance which is discarded after primary use or is worthless, defective and of no use. If we know how to make a waste thing useful,we are able to reduce waste generation.For proper disposing of waste,we need to understand the types of wastes. To make our students understand the concept of *Biodegradable* and *Non- Biodegradable waste* , an activity was organized for class 4 Students in which they were asked to make two dustbins I.e BLUE and GREEN with the help of any waste materia