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ORC Resource Number #2387
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Number Line 2: Changes and Shortcuts
Promising Practice
PROFESSIONAL COMMENTARY

Working on a number line, students find a way to express the addition of two integers as the addition of a single integer. This site is a sequel to Number Line I: Locations and focuses on addition of integers. The Early Algebra lessons were developed as part of a research project. Each lesson in the series includes a synopsis, step-by-step procedures, and downloadable overheads and handouts. The Early Algebra lessons cover many topics in arithmetic in novel ways that lead students into algebraic thinking. (author/sw/js)

OHIO STANDARDS
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Mathematics Academic Content Standards
Number, Number Sense and Operations Standard
NATIONAL STANDARDS
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Principles and Standards for School Mathematics
Number and Operations Standard
RESOURCE TYPE
Instructional Resource
PRACTICE LEVEL
Promising Practice
STANDARDS ALIGNMENT
Grades 3–7
TOPICS
Mathematics --
Numbers and Operations;
Integers;
KEYWORDS
number line
Publisher: TERC