Some study pirke Avos weekly through the summer, from Pesach to Rosh Hashana. Others do so only for the six Shabasos between Pesach and Shavuos, one chapter a week. I've heard the latter custom ...
In the Siddur, Pirkei Avos has a different division (in each Perek the amount of Mishnayos) than in the Mishnayos Avos. Who determined the division of the Mishnayos in the Siddur?
Why do we start off saying Pirkei Avos by first saying the Mishna from Sanhedrin "Kol Yisroel"?