When the copyright term has expired, there is no longer protection and the material goes into the public domain, where it can be used freely.
See 'Copyright Term of Protection' under tab 'Copyright Definition and Compliance' above,
Some authors/creators/organizations place printed and digital material in the public domain, so that it can be used without permission. For printed works, always check inside the work (usually on the first few papes of the publication) to see whether there are any free concessions, e.g. some publications allow reproductions for educational or non-commercial purposes.
On the internet, there are millions of free works. To find them, do a keyword search on “Google”, “Yahoo” or another search engine on the Internet, e.g. “free books”, “free journals”, “free [science or other subject] journals”; “free photographs”, “free images”, “free articles” “free online, full-text articles”, “free architectural drawings or symbols”, “free art or clip art”, “free diagrams”, etc. Check that they are free though, as sometimes the word 'free' comes up on the search, but the actual item si not free.
Section 12 of the Copyright Act allows certain acts of reproduction to be done, without permission. 'Fair Dealing' in Section 12(1) allows reproduction for the following purposes:-
Section 12 (2-4) allow the following without permission:
N.B. 'Fair dealing' is NOT the same as 'Fair use' in the US Copyright law. It is more restrictive and reproduction of copyright works is only allowed in the above circumstances, and not for multiple copies.
Fair Dealing is not defined in the law but the generally accepted amounts that one can copy for educational and research purposes, are as follows:-
Copying just one page may not always be fair, if it is the essence of the work. One has to use one's discretion when copying other people's works.