How to Subtract Using Equal Additions

We’ve looked at the notion of conventional algorithms and how what might seem standard to us isn’t always the most common approach to other people, and vice versa. In fact, we know that many types of calculations can be performed in different ways by different people for different reasons. This concept is so valuable for students to learn that we wanted to explore an interesting example in this issue’s how-to video. See whether you might want to share this with your students the next time you’re working on subtraction algorithms.