Study Level FI focus words and their related words to expand their vocabulary. Students should be encourages to read as widely as possible. Please refer to the Kumon Recommended . does anyone have F1 and F2 answer books? Nobody's responded to this post yet. Add your thoughts and get the conversation going. subscribers in the KumonHate community. This Missing: Pdf. Don't know? Study with Quizlet and memorize flashcards containing terms like yarn, generate, particle and more.