Ethan Hawke Gets A Little Help With The Kids

(Photo: Splash News Online) Ethan Hawke married his childrens' nanny - but it looks like he's taken over kid-care duties now.

The Before The Devil Knows You're Dead star entertained 10-year-old Maya and 6-year-old Levon --his children from his marriage to ex-wife Uma Thurman -- at a playground in New York's Chelsea neighborhood over the weekend.

Wrapped up against the bitter cold, they played a hectic game of nerf ball catch - with little Levon clearly outmatched on a pass from big sister Maya to Dad.

(Photo: Splash News Online) And watching approvingly from the sidelines was former nanny and current wife Ryan Shawhughes and their five-months-old baby Clementine.