Some types of memory mnemonics include music mnemonics and word or expression mnemonics. A mnemonic is a learning technique that helps improve retention, allowing for better recall of information.
A music mnemonic involves putting information into a song in order to better recall it. The same method through which people recall the lyrics of popular songs can also serve to recall other types of information. Examples of music mnemonics include the "ABC Song" and “50 Nifty United States.”
Word or expression mnemonics are among the most common mnemonics, taking the first letter of each item in a list and creating a memorable word or phrase from them. “Please Excuse My Dear Aunt Sally,” for example, is an expression mnemonic that helps students remember the order of operations in math.