How to Add Positive and Negative Integers

Sheena Doria

This educational video provides a comprehensive tutorial on how to add integers, covering three distinct scenarios: adding two positive integers, adding two negative integers, and adding integers with different signs. The instructor introduces two primary visual models to conceptualize these operations: a number line approach, where direction indicates positive (right) or negative (left) movement, and a "chips/counters" model, where colored tokens represent units and demonstrate the concept of cancellation. The lesson progresses systematically from simple same-sign addition to the more complex concept of adding opposite signs.