Making connections becomes increasingly important as students proceed through middle school and high school. This book shows ways of embedding connective processes in instruction in grades 9-12. Problems invite mathematical modeling, unify diverse content, call for different representations, and encourage students to look back at their work to find connections. Activities feature such tasks as determining a dosage schedule for a prescription drug, making "transit graphs" to maximize travel through a canal, and deciding when to accept a "double dare" in a simple game. Mathematics is a highly interconnected discipline. Teaching isolated concepts can limit students' understanding and diminish their interest. The NCTM Process Standards recommend highlighting mathematical connections by actively involving students in five processes: problem solving, reasoning and proof, communication, connections and representation. Following an introduction, this book is divided into four chapters: (1) Connecting with Models; (2) Connecting with a Unifying Theme; (3) Connecting with Multiple Representations; and (4)Connecting with Problem-Solving Processes. Blackline masters and solutions are appended. A list of references and information on the contents of the accompanying CD-ROM are also included.