Maya Tutorial 2: Creating Polygons
Creating a Polygon Cube
Choose Create->Polygon Primitives and select off Interactive Creation.
Choose Create->PolygonPrimitives->Cube-> 
(opens
the dialogue window).
Input:
Width 1
Height 1
Depth 1
Choose Create
A cube will appear at the origin.
Choose Edit->Duplicate Special-> (opens
the dialogue window).
Input:
Translate 1 0 0
Number of copies 6
Choose Duplicate Special
Continue working with Duplicate Special in order to construct a whole cube made up of 6 by 6 by 6 units.
If you would like to group the cubicles, you can do so by using
Mesh->Combine to group the lines. To
ungroup any combinations at a later point, you
can select Mesh->Separate.
Select the Move Tool button 
from the left side toolbar. Hold down x-key to Snap to Grid.