This video tutorial teaches how to add integers with the same sign using a number line. It explains the concept of integers, their order, and absolute value. Through examples like earning money, being in debt, climbing, and digging, the video demonstrates how to add positive and negative integers. It concludes with key points that when adding two numbers with the same sign, the sum is in the same direction as the numbers.

How does moving in the negative direction on a number line affect the sum of integers?

What is the result of adding two negative integers and why?