Chloe McKenzie crouches on the floor, a gaggle of childrensitting criss-cross applesauce around her. “What do you do with an apple seed?” “Water it!” the preschoolers chorus. McKenzie, the founder of BlackFem — a nonprofit focused on teaching financial literacy to disadvantaged students — nods in response. The kids gazing up at her are bright and curious. But they aren’t here for storytime.