One way readers can reinforce or make sure they've understood a concept is to do exercises. These pages give a collection of questions for this purpose.
https://arbital.com/p/exercise_meta_tag
by Eric Bruylant Jun 20 2016
Meta tag for pages with exercises to practice a concept.
One way readers can reinforce or make sure they've understood a concept is to do exercises. These pages give a collection of questions for this purpose.