Identification should include

four-inch block
six-inch block
eight-inch block
twelve-inch block.

Process/Skill Questions:

How do block types get their names?
What determines the size of block to use in a given application?

NCCER Masonry Standards

Level One, Module Six (28105-13): Masonry Units and Installation Techniques

This module describes characteristics of block and brick; how to set up, lay out, and bond block and brick; how to cut block and brick; how to lay and tool block and brick; and how to clean block and brick once they have been laid. This module also provides information about masonry reinforcements and accessories that masons use on the job to lay block and brick professionally and safely.