Home / Chapter 9 · Practice and review
Last edited · 1 min read
Flashcards
One question for every topic. Answer it yourself first, and only then flip the card and compare with the short answer.
“I know it” marks the topic as mastered, the same as the checkbox at the end of a topic page. Progress is saved only in this browser. “Unmastered only” hides the topics you have marked, and “With follow-up questions” adds the deeper questions from each topic’s “Check yourself”.