The subject of algebra has always been important in American secondary mathematics education. However, algebra at the elementary level has been garnering increasing attention and importance over the past 15 years. There is consequently a dire need for ideas, suggestions and models for how best to achieve pre-algebraic instruction in the elementary grades. Planting the Seeds of Algebra will empower teachers with theoretical and practical knowledge about both the content and pedagogy of such instruction, and show them the different faces of algebra as it appears in the early grades. The book will walk teachers of young children through many examples of K-6 math lessons and unpack, step by step, the hidden connections to higher algebra. After reading this book, teachers will be better equipped to reflect on their teaching, renew their thinking, and change parts of their practice in order to transform their classroom culture into one where both students and teachers are attuned to algebraic thinking, reasoning, talking, writing, and doing.

Beyond Sticker Stickler—More Problems to Explore

Beyond sticker stickler—more problems to explore

Detailed answers to the nontrivial questions under the section below titled “For Your Own Learning” can be found in the companion website for this book at–12.

For your Own Learning

1. Exploring Three Standard Subtraction Algorithms

As teachers, we need to be prepared to tackle any algorithm. In our globalized world and multicultural classrooms, we have students whose families teach them a variety of algorithms. Exploring algorithms we are not familiar with forces our minds to shift gears and truly problem solve. Compare and contrast the three standard subtraction algorithms in Figure 6.1. Write an explanation for each procedure before checking the explanations online.

Figure 6.1 Standard Algorithms for Subtraction

2. There are Really Only ...

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