Multiplying Positive and Negative Integers Using Equal Groups

This video tutorial teaches how to multiply a positive integer by a negative integer using the concept of equal groups. It introduces the terms 'factor' and 'product' and explains how to use models to represent positive and negative integers. The tutorial demonstrates the use of a product box to solve multiplication problems and provides examples of multiplying positive and negative integers, emphasizing the concept of zero pairs and additive inverses.

How does the product box function in multiplication problems?

Describe the process of multiplying a positive integer by a negative integer.