Math Units Page

Lesson Purpose

The purpose of this lesson is to help students understand how increases and decreases are expressed and how to combine them. For instance, positive numbers show improvements, profit, or distance above zero. Negative numbers on the other hand show losses, decreasing values, and distance below zero. Being able to understand these values independently and by combining these values through addition and subtraction is a VITAL aspect of Algebra and is foundational for further topics.

Related Documents

Lesson Objectives

At the end of this lesson, students will be able to add and subtract signed numbers.

Student Target

I can add and subtract positive and negative numbers.

CCR Focus Standards

Number and Ratios - Level D

• 7.NS.1

  Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.

Supporting Standards

Standards for Mathematical Practice

• MP.1

  Make sense of problems and persevere in solving them. (MP.1)

• MP.5

  Use appropriate tools strategically. (MP.5)

• MP.7

  Look for and make use of structure. (MP.7)

KYAE Employability Standards

• E.7

  E.7 Accurately analyze information and respond appropriately.

• E.6

  E.6 Identify and effectively use skills and materials needed for a particular task.

• E.10

  E.10 Seek out opportunities for advancement and improvement of personal skills and abilities.