Algebra Readiness Made Easy Grade 5

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Grid Patterns

Overview

Students identify relationships among numbers in a rectangular array of counting

numbers.

Algebra

Explore variables as representing varying quantities • Describe the functional

relationship between the numbers in a 3-by-3 section of an array of counting numbers

Problem-Solving Strategies

Describe parts of patterns • Generalize pattern relationships

Related Math Skills

Compute with counting numbers

Math Language

Array • Grid • Greatest number • Least number •

Middle number (in a 3-by-3 square) • Represent • 3-by-3 square

Introducing the Problem Set

Make photocopies of “Solve the Problem: Grid Patterns” (page 11) and distribute to

students. Have students work in pairs, encouraging them to discuss strategies they

might use to solve the problem. You may want to walk around and listen in on some of

their discussions. After a few minutes, display the problem on the board (or on the

overhead if you made a transparency) and use the following questions to guide a

whole-class

discussion on how to solve the problem:

What is the last number in each row? (a multiple of 5)

What number is just to the right of 12? (13)

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