This book, aimed at precollege teachers, shows how the role of simulation modeling in investigating dynamic processes is now extending beyond research and university environments to the precollege world. The introduction of computer modeling has the potential to significantly improve the quality of secondary science and mathematics education. Enhanced by the adoption of national standards, the increasing access to information through the Internet, and the availability of powerful, user-friendly modeling software, modeling has become even more accessible and relevant to the science and mathematics classroom. This book introduces teachers and students to many different perspectives and approaches to scientific inquiry. Each of the chapters and associated software applications integrates mathematics, science, and technology in an authentic manner. The contributors discuss the issues raised by classroom-based modeling projects and provide most of the software applications described. This book and the accompanying CD-ROM will bring the power of modeling to precollege teachers, researchers involved in curriculum development, and software developers. The CD-ROM includes software tools, applications, demonstrations, and user information for the following software: Function Machines (Mac) GenScope (Mac) HyperGami (Mac and PC) LinkIt (Mac and PC) Model-It (Mac) OOTLs (PC) StarLogo (PC and Mac) StarLogoT (Mac) ThinkerTools (Mac) STELLA (Run-Time Version for PC and Mac) WorldMaker (PC)