What's the use ?

WALT: Understand that technology is driven by human needs

Marwa Riddle

I am in the bathroom and I need to wash my teeth. what do I need?

I am out side and I am in bare feet .what do I need?

I am out side playing in the muddy puddles and My foot is getting dirty.? what do I need ?

Paris Riddle 

I am on a desired island i have no food,water,my phone is dead,I still have money But there is something missing!!!????? What do i Need?

I am out side and at the park I want to go home but i don't have my phone on me but i have these numbers but i don't know witch one 123 , 478,364 and 390 What do i need!!??