I'm just trying to do an assignment in Squeak (Smalltalk), and I can't figure out how to create a matrix with a specific number of rows and columns. 

I know that one can create a 3x3 matrix with something like `A := Matrix new:3.`, but I need something like a 3x2 matrix. The System Browser isn't much help to my understanding of how to do this, and I've been searching the internet for awhile and haven't found much of anything to help. Could anyone give an example line of code of how to create something like a 3x2 matrix?