This document discusses using information and communication technologies (ICT) to promote education for sustainable development (ESD). It outlines four stages of ICT development and provides examples of how Web 2.0 tools can be used to develop ICT knowledge management skills that support ESD. These skills include retrieving and organizing knowledge, collaborating and exchanging knowledge, and communicating and presenting knowledge with respect for different perspectives. The document provides specific Web 2.0 tools and examples of how they can be applied to ESD topics, values, and skills in classroom activities like essays, field trips, questioning, and group work.