Yes it's pretty normal. I've seen a lot of my nieces and nephews doing such aside from my baby :D
She loves tearing every notebooks and books she comes across with. Kaya nga nahirapan din ako kasi gusto ko sya basahan ng baby kaso sinisira nya lang. :( Minsan din naiinis yung kapatid kong teacher sa kanya kasi nakikialam talaga sa paperworks eh madalas test papers ng students nya. So what she does is she shut her out para "safe" hehe
Magbasa pa