1 . Ran - Explaining Ha-Chodesh Haz'e La'chem - Marking the significance of the beginning of the year associated with seminal events.
2. R'Bechaya - Explaining the primary method that Bnai yisroel are Mekadesh Ha'Chodesh.
3. Abarbanel - Describing the primary method of establishing the Chodesh by answering the issues brought up by the Tzedukim.