Cf. Siddur, p. 193ff.
In the Kedushah which opens with כתר, the reader begins the first two words of Shema Yisrael together with the congregation,1 and dwells on them until the congregation has completed the response ending להיות לכם לאלקים. Only then does he conclude his opening verse aloud.2
The Six Remembrances (p. 86) are read every day, including Shabbos, Yom-Tov, Rosh HaShanah and Yom Kippur.3
On Shabbos the Six Remembrances are read after the passage beginning ולקחת סולת (p. 201).4
On Shabbos Shirah it is customary to eat black buckwheat, also known as kashe.5