A Small class
grande
es una clase de matematicas means is a kind of mathematics
the smallest class is ?
The term una pequeña cantidad means "a small quantity" (e.g. a dash).
clase pequena (with a tilde on the 'n')
A lady in the class.
Unas clases
It means "You are a classmate".
Is there a computer in your class?
Esto es una pequena memoria
A classmate.
Tengo una pequena chica. If you have a daugther you say: Tengo una hija