The Number Line in the Common Core

CONTENTS OF CURRICULUM UNIT 16.05.02

  1. Unit Guide
  1. Introduction
  2. Getting Started Right is Important
  3. Linear Measurement
  4. The Number Line
  5. Mathematical Practices
  6. Teaching Strategies
  7. Classroom Activities
  8. Resources
  9. Endnotes
  10. Appendix - Implementing District Standards

Using the Number Line in Second Grade

Carol P. Boynton

Published September 2016

Tools for this Unit:

Guide Entry to 16.05.02

For many second graders, the beginning of the year is a time for revisiting knowledge and skills learned in first grade.  The summer months away from mathematics instruction along with little opportunity for practice and guidance sometimes means a loss of strong understanding of concepts.  Addition and subtraction of numbers to 100 is a Common Core Standard for first-grade students, although many struggle with this fundamental concept even throughout second grade.  This curriculum unit is designed to increase students' understanding of the number line as a tool to help them master two-digit addition and subtraction, improve their base-ten number sense and increase their fluency in mathematical operations.

(Developed for Mathematics, grade 2; recommended for Mathematics, grade 3)

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