The awnswer is debatable. If one is concerened for the safety of the twelve year old incase of emergencies then yes. People are often concerened with phone bills, but it can be avoided with restrictions. A cell phone is a handy tool but not nessesarily needed for developmental growth of the child.
"Twelve-year-old" is the correct way to write the age of a twelve-year-old individual. The phrase should be hyphenated when used as an adjective before a noun.
Not an appropriate question for a twelve year old.
A twelve-year-old who has that height should have a weight of between 90 and 99 pounds. The average twelve-year-old with that height often weighs 91 pounds.
I don't think they need it.
no
nothing
You should get them to sit down and talk about the things they like and what they like to do!
A twelve year old should not have a Facebook! Nobody even needs a Facebook! Why don't you just go and meet people in person!
No. The term "twelve year old" is a noun (someone who is 12). It can be an adjective, but should be hyphenated, as in twelve-year-old cat. *The Chicago Manual of Style suggests that both nouns and adjectives should be hyphenated. Other styles may differ.
No that's nasty.
i think prodigy should date at the age twelve prodigy is fine for a twelve year old
no not really