Grade 8 Number and Operation Sense (8.NOS)

Exploring the Revisions

The revised standards are presented in a crosswalk format, displaying the new standards alongside their previous versions to clearly highlight shifts in content and instructional focus.

Open the Grade 8 MCCRS Mathematics Crosswalk. Explore the standards within the Number and Operation Sense (NOS) domain. As you review, use the following guiding questions to identify key changes:

- What standards have been added, removed, or revised?
- What shifts do you notice in terms of instructional focus or clarity of language?
- Are there new skills or concepts introduced that were not previously emphasized?

Make note of or highlight specific examples that stand out to you.

Use what you've learned from your review of the 8.NOS standards within the Crosswalk to answer the question. You must answer the Quick Check question to continue to the next part of the course.

Quick Check

What is the major shift(s) around the development of understanding scientific notation?

Grade 8 students now have to perform operations with numbers expressed in scientific notation.: Incorrect: This concept was removed from grade 8 standards with the removal of 8.EE.A.4.
Grade 8 students now have to apply scientific notation to represent and compare very large and very small quantities in context.: Correct: 8.NOS.B.5 outlines the shift to applying scientific notation in context.
Grade 8 students now have to express numbers as a single digit times an integer power of 10 to estimate and compare magnitudes.: Incorrect: This is not new content for Grade 8 students. In the previous standard 8.EE.A.3 students had to also express numbers as a single digit times an integer power of 10 to estimate and compare magnitudes.
Grade 8 students now have to use scientific notation to model and compute with real-world quantities, choose appropriate units, and interpret their meaning based on the context.: Correct: The revised standard 8.NOS.B.5b explicitly calls for students to use scientific notation to model and compute with real-world quantities, choose appropriate units, and interpret their meaning based on the context.