When Tisha B'Av comes out on a Shabbos, do we say Pirkei Avos in the cycle on that Shabbos?
It seems clear from the Rama, MB, and other sources (as well as from most printed siddurim) that Pirkei Avos is said in the synagogue at Shabbos Mincha as part of the tefillah in the summer months, ...
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 ...
Why do we start off saying Pirkei Avos by first saying the Mishna from Sanhedrin "Kol Yisroel"?