How do you get all the cannons in new super Mario bros wii?

Answer 1

i only know some cannons

in world 1 you find it in the level before the castle

when you get near the end there will be a part with a roof

flutter jump(you need to be on yoshi) and you'll find a hidden compartment

but don't go in instead gon on top and just keep running forward

in world 4 the cannon is in the castle

when you get to the halfway flag there will be some falling blocks

at the wall jump and there will be a hidden space which leads to the red flag

you'll also have to let one of the falling blocks fall but don't let 3 fall before you in the hidden space

in world 5 the cannon is in the boo level

go forward then go down instead of taking the top path

keep going along the middled path

don't go down the first down path but go down the second

then try walking through the left wall

if you sucseed you'll come to another door

go in there then just go to the end