The important ideas of algebra, including patterns, variables, equations, and functions, are the focus of this book. Student activities that introduce and promote familiarity with these ideas include constructing growing patterns using isosceles triangles, analyzing situations with constant or varying rates of change, and observing and representing various patterns in an array. The supplemental CD-ROM features interactive electronic activities, master copies of activity pages for students, and additional readings for teachers.
Navigating through Algebra in Grades 3-5 is the second of four gradeband books that demonstrate how some of the fundamental ideas of algebra can be introduced, developed, and extended. The introduction to this book is an overview of the development of algebraic reasoning from prekindergarten through grade 12. Each of the three chapters that follow the introduction focuses on an important idea of algebra. Chapter 1 deals with patterns, chapter 2 deals with variables and equations, and chapter 3 examines functions. The last chapter summarizes the major ideas addressed and gives a brief overview of the concepts to be presented in subsequent grades.
Each chapter begins with a discussion of a basic idea of algebra, which is followed by student activities that introduce, and promote familiarity with, the idea. For each activity, the recommended grade level is identified and the goals to be achieved, the prerequisite skills and knowledge, and the materials necessary for conducting the activity are presented. Some of the activities require blackline masters, which are signaled by an icon and identified in the materials list and can be found in the appendix. They can also be printed from the CD-ROM that accompanies the book. The CD, also signaled by an icon, contains three applets for students to manipulate and resources for professional development.
All the activities have the same format. Each consists of three sections: "Engage," "Explore," and "Extend." The "Engage" section presents tasks designed to capture students' interests. "Explore" presents the core investigation that all students should be able to do. "Extend" suggests additional activities for students who demonstrate continued interest and want to do some challenging mathematics. Margin notes include teaching tips, anticipated student responses to some of the questions or activities, references to some of the resources included on the CD-ROM that accompanies this book, and quotations from Principles and Standards for School Mathematics (National Council of Teachers of Mathematics [NCTM] 2000). The assessment ideas for each activity suggest strategies for evaluating students, offer insights about students' performance, and suggest ways to modify the activities for students who are experiencing difficulty or who need enrichment. Finally, ideas are offered for connecting the activity to related instructional topics.
