The following diagram is used to compare or contrast two or more items by as many parameters as needed. The size of the diagram can be altered to fit one's needs by adding boxes. It is useful for organizing ideas prior to composing, taking notes from text, or for test preparation.
The example below is from SBCC's AD Nursing Program, taught by Jan Anderson, who uses this diagram as an overhead during class lecture. She fills in important vocabulary and facts while instructing.