Applications-driven sections are included in the chapter on linear second-order equations. Modernized treatment of the chapter on the introduction to systems and phase plane analysis increases student comprehension of the material. Group Projects relating to the material covered appear at the end of each chapter. They may involve more challenging applications, delve deeper into theory, or introduce more advanced topics. The expanded coverage of dynamical systems is consistent with the level of the text. The phase line is covered at the beginning of the text. Updated Instructor Manuals for MAPLE/Matlab/Mathematica , tied to the development of the text, Included are suggestions on incorporating these technologies into the courses, along with sample worksheets for labs.