How it feels: Blocked practice—that is, mastering all of one type of problem before progressing to practice another type—feels (and looks) like you’re getting better mastery as you go, whereas interrupting the study of one type to practice a different type feels disruptive and counterproductive. Even when learners achieve superior mastery from interleaved practice, they persist in feeling that blocked practice serves them better. You may also experience this feeling, but you now have the advantage of knowing
