Suppose if u were a teacher and you are telling the student to to write about the chemical element .What would you tell them to write about that chemical element?

you would probably want to consider:

is it a natural or man made element?
if natural where is it found and in what form?
the concentration in sea water is always interesting
physical properties?
chemical properties?
uses, in the past and today as the use of some elements has changed markedly over last 20 years.

you could also consider safety and transport.