Rational Numbers

Lesson 7

Math

Unit 4

6th Grade

Lesson 7 of 13

Objective


Compare and interpret the order of rational numbers for real-word contexts.

Common Core Standards


Core Standards

  • 6.NS.C.6.C — Find and position integers and other rational numbers on a horizontal or vertical number line diagram; find and position pairs of integers and other rational numbers on a coordinate plane.
  • 6.NS.C.7.A — Interpret statements of inequality as statements about the relative position of two numbers on a number line diagram. For example, interpret -3 > -7 as a statement that -3 is located to the right of -7 on a number line oriented from left to right.

Criteria for Success


  1. Know that if a number $$a$$ is to the right of number $$b$$, then $$a$$ will always be bigger than $$b$$; if a number $$b$$ is to the left of number $$a$$, then $$b$$ will always be smaller than $$a$$.
  2. Write, order, and compare positive and negative numbers for real-world contexts such as elevation, temperature, and money.
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Anchor Problems

25-30 minutes


Problem 1

The Navy Seals are practicing new techniques with two submarines. A blue submarine is 425 feet below sea level, while a red submarine is 375 feet below sea level.

Which number line represents the situation? Which point represents each color submarine? Justify your response.

Guiding Questions

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Student Response

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References

EngageNY Mathematics Grade 6 Mathematics > Module 3 > Topic B > Lesson 9Example 2

Grade 6 Mathematics > Module 3 > Topic B > Lesson 9 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..

Modified by Fishtank Learning, Inc.

Problem 2

The record low temperatures for a town in Maine are $$-20$$°F for January and $$-19$$°F for February. 
Order the numbers from least to greatest. 

Guiding Questions

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Student Response

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References

EngageNY Mathematics Grade 6 Mathematics > Module 3 > Topic B > Lesson 7Example 1

Grade 6 Mathematics > Module 3 > Topic B > Lesson 7 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..

Modified by Fishtank Learning, Inc.

Problem 3

The account balances of four bank customers are shown below.

Customer Account balance
Leonard $$-$8.90$$
Michelle $$$8.60$$
Nikhil $$-$15.50$$
Olivia $$-$9.00$$

a.   Order the account balances from least to greatest. 

b.   Who has the greater account balance: Olivia or Leonard? Explain your reasoning. 

Guiding Questions

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Student Response

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Problem Set

15-20 minutes


Give your students more opportunities to practice the skills in this lesson with a downloadable problem set aligned to the daily objective.

Target Task

5-10 minutes


The number line below shows the elevations, in meters, of two different sea animals in the ocean. 

a.   Order the elevations of the sea animals from least to greatest.

b.   A third sea animal, C, is located at an elevation that is greater than sea animal A. Name a possible elevation for sea animal C.

Student Response

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Additional Practice


The following resources include problems and activities aligned to the objective of the lesson that can be used for additional practice or to create your own problem set.

Next

Write and interpret inequalities to compare rational numbers in real-world and mathematical problems.

Lesson 8
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Lesson Map

A7CB09C2-D12F-4F55-80DB-37298FF0A765

Topic A: Understanding Positive and Negative Rational Numbers

Topic B: Order and Absolute Value

Topic C: Rational Numbers in the Coordinate Plane

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