This document discusses the integration of technology and manipulatives in mathematics teaching. It outlines topics like virtual manipulatives, dynamic geometry software, computer algebra systems, and other technologies. Virtual manipulatives allow students to interact with visual representations of dynamic objects to build mathematical understanding. Effective use requires teachers to understand representations and lesson structure. Sample websites for virtual manipulatives on measurement, conversions, and volume are provided. Integrating technology can keep students engaged by empowering them in today's technological world.