During presentations, Google Slides usually go from slide 1 to 2, from 2 to 3, then 3 to 4, and so on. However, links can be included on slides. Students can choose which links to select and learn in the way they want.
Here is a 3 slide Google Slides show.
Slide 1 is the "Homepage".
Slides 2 and three can both be accessed from slide one using the links.
Notice the links on slides 2 and 3 to return to slide 1.