updated 04/30/2010 AT 11:00 AM ET
•originally published 04/30/2010 AT 2:10 PM ET
What hands-on parents!
Joining them? Big brother Jack, 2½, Brady’s son with ex Bridget Moynahan.
The happy family played together on a playground, and Jack even rode around on a little scooter while Benjamin stayed comfortably perched in his mother’s arms.
Meet Sandra Bullock’s baby! For the whole story – including photos of her son Louis, an emotional interview about her breakup with Jesse James and her life as a new mom – pick up the new issue of PEOPLE, on newsstands Friday