Moving with Algebra Sampler

16 Reproducible Blackline Masters Reinforce Important Skills and Reteach Essential Concepts. Skill Builders make reteaching easy. Every learning objective is covered by at least one Skill Builder . The top of each page explains the learning objective using pictorial representations that review the activities from the Lesson Plan. Students then apply that understanding when complet- ing the accompanying practice problems. Reteach Concepts and Build Skills Step 6b 56 Skill Builder MA-9 © Math Teachers Press, Inc. Name Use black cubes to represent positive integers and white cubes to represent negative integers. These patterns will help you add integers. A number and its opposite has a sum of zero. + + 1 + ( – 1) = 0 The sum of two positive integers is positive. + + 2 + ( + 1) = + 3 The sum of two negative integers is negative. + – 2 + ( – 3) = – 5 The sum of a positive integer and a negative integer will be positive or negative. + + + 2 + ( – 3) = – 1 + 3 + ( – 1) = + 2 Match pairs of black and white cubes to get sums of zero. Write the integers. Count to find the sum. 1. + ____________________________ 3. + ____________________________ 2. + ____________________________ 4. + ____________________________ 5. Complete the addition table for the integers from – 5 to + 5. 6. The sum of a positive integer and a negative integer will be positive if _____________________________ 7. The sum of a positive integer and a negative integer will be negative if _____________________________ 8. The sum of a positive integer and a negative integer will be zero if _____________________________ + – 5 – 5 – 4 – 4 – 3 – 3 – 2 – 2 – 1 – 1 0 0 1 1 2 3 4 5 2 3 4 5 Adding Integers Skill Builder reteaching worksheets rely heavily on illustrations and other kinds of graphic aids to explain and reinforce the transition from con- crete to abstract. Program Overview