IM CERTIFIED® BLOG
  • Math Curriculum
    • IM Certified® Math
    • IM K–5 Math™
    • IM 6–8 Math™
    • IM 9–12 Math™
  • Professional Learning
  • Community
  • Blog
    • New Blog Posts
    • Grades K–2 Math
    • Grades 3–5 Math
    • Grades 6–8 Math
    • Grades 9–12 Math
  • Schedule a Call
Select Page
Why is 3 – 5 = 3 + (-5)?

Why is 3 – 5 = 3 + (-5)?

by William McCallum | Oct 31, 2018 | Grades 6–8

By William McCallum You will never have to subtract again. Students sometimes learn about addition and subtraction of integers using integer chips. These are circular chips, with a yellow chip representing +1 and a red chip representing -1. You start with the...

RECENT POSTS

  • The Joy of Fluency April 5, 2021
  • A Circumference By Any Other Name… March 31, 2021
  • Building Equitable Learning Environments for Each Student March 22, 2021
  • Explorations in IM K–5 Math: Challenges for Curious Students March 2, 2021
  • What Does It Mean to Use Mathematics? February 22, 2021

Categories

  • Grades 3–5 (61)
  • Grades 6–8 (73)
  • Grades 9–12 (51)
  • Grades K–2 (41)
  • Grades K–5 (8)
  • Professional Learning (41)

Popular Tags

5 Practices Adapting Curriculum Algebra 1 assessment back to school CCSS CCSSM classroom community classroom discourse classroom success stories Common Core conceptual understanding curriculum Design principles dilation distance learning Division Elementary Grades Math Equity Fractions Geometry high school Illustrative Mathematics 6–8 Math IM 6-8 Math IM 9-12 Math IM K-5 Math instructional routines in the classroom learning goal learning target lesson-planning lesson planning math content Math Language Routines notice and wonder number talk planning problem-based learning professional books Professional Learning routines slope Standards supports for English Language Learners Unfinished Learning
Illustrative Mathematics white logo
  • Follow
  • Follow
  • Follow
  • Follow
  • Follow
SUBSCRIBE

to the IM Blog and Newsletter

Contact Us



Illustrative Mathematics

PO Box 69822
Oro Valley AZ 85737


855.741.6284



Email Us

h

Get in Touch

IM K–12 Math

  • K–5 Math
  • 6–8 Math
  • 9–12 Math
  • Professional Learning
  • Community

Illustration of Standards

  • Practice Standards
  • Content Standards

The IM Story

  • Our Purpose
  • IM Certified Facilitators
  • IM Certified Partners

Quick Links

  • IMpact
  • News
  • FAQ
  • Careers
  • Presentations
  • Privacy Policy

All products and services are offered throughout the United States. Content on this page is licensed. © copyright 2020, Illustrative Mathematics, all rights reserved