Students use number lines to solve addition and subtraction problems involving positive and negative fractions and decimals. They then verify that the same rules they found for integers apply to fractions and decimals as well. Finally, they solve some real-world problems.Key ConceptsThe first four lessons of this unit focused on adding and subtracting integers. Using only integers made it easier for students to create models and visualize the addition and subtraction process. In this lesson, those concepts are extended to positive and negative fractions and decimals. Students will see that the number line model and rules work for these numbers as well.Note that rational number will be formally defined in Lesson 15.Goals and Learning ObjectivesExtend models and rules for adding and subtracting integers to positive and negative fractions and decimals.Solve real-world problems involving addition and subtraction of positive and negative fractions and decimals.

This resource is from Tools 4 NC Teachers. This document is the About the Cluster document created by the authors of the NC2ML Instructional Frameworks.

This resource is from Tools 4 NC Teachers. This document is the About the Cluster document for Cluster 7 created by the authors of the NC2ML Instructional Frameworks. This document should be read prior to teaching Cluster 7.

Number Line by the Math Learning center is a useful tool for students to provide strategies for addition, subtraction, multiplication and division. This extension also allows for creating number lines with fractions and negative numbers. This activity card can be used in grades tw0-five and can be adjusted for the students the teacher is working with.

This resource is a great tool to create number lines of varying start and end points. Set the starting and ending numbers and the increments you want for the number line and click the 'Create It' button to retrieve a pdf of your number lines.

For this assessment task, students solve a word problem using numbers, an equation, and a number line diagram.

This resource is from Tools4NCTeachers. In this lesson, students develop strategies for adding 3-digit numbers, with a focus on adding in chunks.  Students build this strategy of adding in chunks by mentally adding 10 and 100 to numbers, and adding on the number line. Remix this lesson to include extension activities such as math stations.

This resource is part of Tools4NCTeachers.

In this lesson, students explore counting patterns to develop place value understanding. Students use tools such as number lines, and a hundred chart. Additionally, the explore patterns within real world situations.

This lesson is from Tools4NCTeachers. In this lesson, students solve addition and subtraction problems and represent strategies and solutions on a number line. This is remixable.

This resource is from Tools 4 NC Teachers. Here is a parent letter to send home at the beginning of Cluster 6.

This resource is from Tools 4 NC Teachers. The parent letters are intended to be sent home at the beginning of Cluster 7 in Grade 3.

This lesson is from Tools4NCTeachers. In this lesson, students solve problems involving fractions and use various models to compare fractions. Students focus on the importance of using the same whole when comparing. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students will explore decomposing fractions and how it connects to finding equivalent fractions. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students explore correct placement of fractions on a number line. They use the number line, reasoning, and understanding of benchmark fractions to compare fractions. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students explore correct placement of fractions on a number line. They use the number line, reasoning, and understanding of benchmark fractions to compare fractions. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students explore correct placement of fractions on a number line. They use the number line, reasoning, and understanding of benchmark fractions to compare fractions. This is remixable.

This resource is part of Tools4NCTeachers.

In this lesson students use the open number line and various strategies to solve story problems.

This resource is part of Tools4NCTeachers.

In this lesson students use the open number and various strategies to solve story problems.

This resource is from Tools4NCTeachers.In second grade, students learn to add and subtraction using strategies based on place value and number relationships.  They use a variety of representations such as base ten drawings and number lines.  Second graders do not learn the standard algorithm.  This resource outlines second grade addition and subtraction strategies 

This resoruce is from Tools4NCTeachers.Second graders use a variety of strategies based on place value and number relationships to add and subtract multi-digit numbers.  The first attachment in this resource outlines strategies for adding 3-digit numbers, and the second attachment outlines strategies for subtracting 3-digit numbers.Second graders are not taught the standard algorithm.