Interleaving

This involves mixing different approaches, concepts, and viewpoints into your learning. It helps you solidify your understanding and promotes creativity and flexibility.

Why it works: While it feels more difficult, if you spread out your study over a period of time, you can...

Once you have a basic understanding of what you are trying to learn, practice jumping back and forth between problems that require different techniques. This will solidify your understanding of the concepts by learning how to choose to apply them in various situations. 

When it comes to learning a difficult subject, people often believe you should practice one thing at a time.

How to really learn: Mixing it up, however, is a better approach. In mixed learning, you get a chance to see the core idea below it.