The APA Manual (7th edition, p. 21) defines self-plagiarism as “the act of presenting one's own previously published work as original and new." Reuse of old assignments can be considered self-plagiarism by both the APA manual and by Algonquin College's AA48 Academic Integrity Policy.
We recommend discussing the possible reuse of portions of one's own work with their instructor before doing so. You are still required to cite yourself within the new work using proper citation style.
Example using APA 7th edition:
Author, A. A. (Year). Title of the work [Unpublished paper]. Department Name, University Name.