Teaching use is not a blanket permission. You need a lawful route for the material you want to use.
In practice, this will usually be one of these:
- material you created yourself
- material with a licence that permits reuse
- Library-licensed content shared by link
- a copyright exception such as illustration for instruction
- a digitised extract provided through the Library scanning service
A licence is often the simplest route. This might be a Library subscription, the CLA Higher Education Licence, or an open licence such as Creative Commons.
For many routine teaching requests involving books and journals, the CLA Higher Education Licence limit is usually one chapter, two articles from a journal issue, or 10% of the publication, whichever is greater, for a particular course or other individual purpose, and subject to coverage and other licence conditions.
A copyright exception may also apply. In teaching, illustration for instruction is often the most relevant. This may apply where you are using a limited amount of material for a non-commercial teaching purpose, the use is fair, no more than needed, and the source is acknowledged. For digital sharing with students, a licence route or Library-managed scan is usually more reliable.
If you want to share a more substantial extract with students, it is usually better to rely on a licence or the Library scanning service.
Even where individual extracts fall within licence limits, you should not build up a set of copied readings that effectively substitutes for students buying a core textbook.