#### Lesson Plan

## The Number Line Extended

### Alignments:

### Grade Levels

### Related Academic Standards

### Assessment Anchors

### Eligible Content

### Big Ideas

### Concepts

### Competencies

### Objectives

Students will learn about negative numbers and how negative numbers can be considered an extension of the positive number line. Students will:

- learn about the extended number line for all integers.
- use the number line to locate negative and positive numbers.
- identify real-world situations that can be modeled by negative numbers.

### Essential Questions

- How is mathematics used to quantify, compare, represent, and model numbers?
- How can mathematics support effective communication?
- How are relationships represented mathematically?
- How can expressions, equations and inequalities be used to quantify, solve, model, and/or analyze mathematical situations?
- What makes a tool and/or strategy appropriate for a given task?

### Vocabulary

**Integer:**A real number that does not include a fractional part.**Negative Number:**A number with a value less than zero.**Positive Number:**A number with a value greater than zero.

### Duration

90–120 minutes

### Prerequisite Skills

### Materials

- bowl
- copies of Number Card Sheet (M-6-1-1_Number Card Sheet.docx)
- two or more nondigital (analog) Celsius thermometers
- copies of Match Game cards (M-6-1-1_Match Game.docx)
- copies of the Exit Ticket (M-6-1-1_Exit Ticket and KEY.docx)
- copy of Number Line Template (M-6-1-1_Number Line Template.docx)—optional
- sticky notes for student use
- piece of string—optional to show absolute value
- decks of playing cards—optional for Extension activity
- Absolute Value worksheet (M-6-1-1_Absolute Value and KEY.docx)

### Related Unit and Lesson Plans

### Related Materials & Resources

The possible inclusion of commercial websites below is not an implied endorsement of their products, which are not free, and are not required for this lesson plan.

- Use the following Web site for finding negative temperatures to share with the class: www.weather.com
- The following Web site features a number line game: http://www.funbrain.com/linejump/
- Topics in Algebra 1 App for TI-83 Plus and TI-84 Plus Families: An application that is preloaded or can be downloaded to explore number sense

http://education.ti.com/educationportal/sites/US/productDetail/us_algebra_topics_1_83_84.html

- Classroom materials and student worksheets using the Topics in Algebra 1 App PDF downloadable worksheets (Activities
*What’s My Sign?*or*Integer Smash*)

http://education.ti.com/sites/US/downloads/pdf/alg1-ch01.pdf

### Formative Assessment

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