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    21 Clever Mnemonic Devices That Will Help You Remember Almost Everything

    Please Excuse My Dear Aunt Sally.

    We asked the BuzzFeed Community for some of their funny, dirty, and most creative mnemonic devices. What are mnemonic devices? They’re useful little tricks or methods — like acronyms or poems — that help them remember important information. Here are some of the best:

    1. The order of planets from the sun:

    2. The order of the cell cycle phases:

    3. When to use "gray" or "grey":

    4. The order of mathematical operations:

    5. When to use "affect" or "effect":

    6. The order of taxonomic rank:

    7. How to remember who is on which bill:

    8. How to write "b" and "d":

    9. How to remember sin, cosine, and tan:

    10. How to spell "necessary":

    11. The carpal bones:

    12. The difference between stalagmites and stalactites (aka mineral formations in caves):

    13. Time zones in Canada:

    14. How to set the table:

    15. The order of the cranial nerves:

    16. The order of the first five books of the Old Testament:

    17. How to spell "desserts":

    18. How many days are in each month:

    19. The order of the Great Lakes:

    20. How to do multiplication with decimals:

    21. And finally, the four principal compass directions:

    Note: Submissions have been edited for length and/or clarity.

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    CORRECTION

    Oops! Hamilton and Franklin weren’t presidents. ♫ Never gonna be president now, never gonna be president♫. No. 7 has been updated accordingly.