I find this sentence to be rather awkward, as generally you would begin with the greeting, "E Tutu, pehea 'oe?" (Grandma! How are you?)
I wouldn't agree.. when i come to my grandma I often say just "hey! How are you, grandma?" So I think it's a normal sentence they suggested:)
Totally agree. I think the greeting first is important and more appropriate in conversation.
grandmother = kupuna wahine, grandfather = kupuna kāne
grandma = tūtū wahine, grandpa = tūtū kāne
grandma = kūkū wahine, grandpa = kūkū kāne
grandma = tūtū, grandpa = tūtū
grandma = kūkū, grandpa = kūkū
I think the "e" in this case shows that you are talking to the person following it, in this case, grandma.
From what I can tell, the " 'oe " shows that you are speaking in 2nd person (about the person you are talking to) and the "e" shows who you are talking to.