# The coherence map shows the relationships among the standards across multiple topics and grade levels in the common core subjects Math & English (ELA). Coherence map helps teachers/educators diagnose the students mastery in specific topics and it will help students achieve success on that topics/standards.

The Lumos coherence map not only provides graphical representation and convenient navigation within the standards map but also access to thousands of engaging learning resources such as Practice questions, Videos, Books, and Infographics related to every standard. It helps educators and students visually explore the learning standards. It's an useful tool to help students progress through the learning standards. Teachers can use this tool to develop their pacing charts and lesson plans....SHOW MORE

# The coherence map shows the relationships among the standards across multiple topics and grade levels in the common core subjects Math & English (ELA). Coherence map helps teachers/educators diagnose the students mastery in specific topics and it will help students achieve success on that topics/standards.

The Lumos coherence map not only provides graphical representation and convenient navigation within the standards map but also access to thousands of engaging learning resources such as Practice questions, Videos, Books, and Infographics related to every standard. It helps educators and students visually explore the learning standards. It's an useful tool to help students progress through the learning standards. Teachers can use this tool to develop their pacing charts and lesson plans.

The standard map provides information related to previous level, the next level, and similar standards. The direct link symbol is used to represent previous, and next level (DIRECT LINK) whereas similar standards are represented using a dotted line (NON_DIRECTIONAL LINK). You can also find information about Math and English Language Arts standards based on keywords of your interest using the search box provided.

HSN.RN.B.3

**Standard Description of HSN.RN.B.3:**Explain why the sum or product of two rational numbers is rational; that the sum of a rational number and an irrational number is irrational; and that the product of a nonzero rational number and an irrational number is irrational

**Overview: **

Standards preceding HSN.RN.B.3 are 8.NS.A.1. Standards that are taught after students master HSN.RN.B.3 are HSA.APR.A.1, HSA.APR.A.1, HSA.APR.D.6, HSA.APR.D.6. Standard(s) related to HSN.RN.B.3 are HSN.RN.A.1. The Lumos Coherence map for HSN.RN.B.3 includes standards correlations, description and a list of apps, questions, videos, books and other resources related to HSN.RN.B.3

#### Related FAQs

### What is the importance of coherence map?

The Coherence map gives educators a visual understanding of Grade Level Standards in both Math and English Language Arts (ELA). Teachers can effortlessly see how each grade level connects to previous and next levels along with the same standard.

### How to use coherence map?

Math and ELA standards for each Grade Level from 3rd grade up through high school are represented on a grid. Teachers simply click on the Grade Level/Content Area that they need to bring up a pop-up list of all the standards connected with it. It’s also possible to navigate to individual Standards by typing them manually into the search bar.