Bigger than 5.

There are quite a few reasons I think the big 6 approach appeals to me, but the largest is naturally my personal experience.

When I was in high school I recall feeling a lot of information overload, and I got through that by two main techniques:

1: organise what I needed to learn, follow it through logically and work through my tasks

2: (the most used technique, I'll admit) to put my head in the sand and generally ignore the workload. which naturally meant a lot of catching up was in order.

As a future learning manager I feel this would be a great thing to incorporate into my classrooms. To have the students consciously working through and ticking off these skills as they work through them, until they become a habit to the students.