Draw and label examples of all rectangular prism built with 16 unit cubes
1 by 1 by 16
2 by 2 by 4
1 by 8 by 2
1 by 4 by 4
2 by 2 by 4
1 by 1 by 16
Looking down from the top of the stack you see 2 rows of 4 cubes.
Looking at the face, you see 2 rows of 2 cubes.