Ayo Edebiri as a Math Girl, Interrupted

Cheadle and Edebiri are both down-to-earth and unshowy in their clear affection for each other, and they’re warmly believable as parent and child. Cheadle is laid back to the point of liquidity; he’s the only star I’ve ever seen get entrance applause for lying on a love-seat. Edebiri, though, is in another league. At several points, she manages a crucial stage trick: She can seem to shrink, collapsing inward, while the audience registers an expanding sense of presence. It will serve her beautifully in other roles.