Learning from multiple sources
Learning from multiple sources refers to using multiple source materials while learning a subject. For instance, a student may attend lecture and later watch a YouTube video that explains the same concept at home.
- An autodidact reads from multiple textbooks
- A student reads a textbook and a blog post explaining the same concept
- A student encounters a concept in the classroom, then later asks their tutor to explain the same concept
- A college student attends lecture and later watches a YouTube video that explains the same concept
In math, learning from multiple sources can give attention to certain contingencies in the subject (e.g. notation, specific constructions, specific encodings of structures) which may have seemed like necessities.
Since in general two people will learn the same subject from different sources, being familiar with other notation/terminology will help with communication.
Different sources place emphasis on different parts, and overlap may not be exact (see e.g. discursiveness), so one may in general learn new things by trying multiple sources.