This is an introduction to your first calculus unit of limits! Here you will be looking at what qualifies as “continuity” in a function, what is “defined” and begin the concept of limits. You may discover familiar concepts such as the “hole” which we explored in Pre Calc.
Introduction to limits (cr: Khan Academy)
Continuity Basic Introduction, Point, Infinite, & Jump Discontinuity, Removable & Nonremovable (cr: Organic Chemistry Tutor)