Many Very Educated Men Justify Stealing Unique Ninth
Mary's "Virgin" Explanation Made Joseph Suspect Upstairs Neighbour
My Very Earnest Mother Just Showed Us Nine Planets
My Very Easy Method Just Speeds Up Naming Planets
My Very Educated Mother Just Served Us Nine Pies
Mary Visits Every Monday Just Stays Until Noon Period
My Very Educated Mother Just Said Uh-oh! No Pluto (Stephen Colbert's tongue-in-cheek mnemonic)
Most Volcanoes Erupt Marmalade-Jam Sandwiches Under Normal Pressure
My Very Easy Memory Jingle Seems Useful Naming Planets
My Very Eager Mother Just Served Us Nine Pizzas
In Have Spacesuit Will Travel, Robert A. Heinlein includes 'prices' which represent the mean AU (Astronomical Unit - mean distance of the Earth from the Sun = 93 million miles = 149 million km) of all the planets from the sun:
To remember the order of taxa in biology (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species):
"Dear King Philip Come Over For Good Spaghetti/Soup" is often cited as a (clean) method for teaching students to memorize the taxonomic classification system. Other variations tend to start with the mythical king, with one author noting "The nonsense about King Philip, or some ribald version of it, has been memorized by generations of biology students." 
Dangerous Kittens Pommeled Cute Ogres For Gigantic Supermen.
Do Kings Play Chess On Fine Green Silk?
Dumb Kids Prefer Candy Over Fancy Green Salad
Dumb Kids Playing Catch On Freeway Get Squashed
Dirty, Kinky People Can Often Find Great Sex
Do Kids Pass Chemistry Or Flunk General Science?
To remember the lifecycle of cells (Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis):
Idiotic Penguins Make Antarctica Too Cold
IPee More After Tea Constantly
To remember the common functional groups (Hydroxyl, Carbonyl, Carboxyl, Amine, Sulfhydryl, Phosphate, Methyl):
Hair Care Can Always Save People Money
To remember the processes that define living things:
To remember the roles of reproductive organs in flowers:
Stamen are male; stigma (as in mother) are female
Business and Economics
To remember the American Institute of Certified Public Accountants (AICPA) "Principles of Professional Conduct" from the "Code of Professional Conduct" (Responsibility, The Public Interest, Integrity, Objectivity and Independence, Due Care, Scope and Nature of Services):
"My Enormous Penguin Bounces Pretty High" to remember the series of alkanes : Methane, Ethane, Propane, Butane, Pentane, Hexane
"Please Send Cats, Monkeys And Zebras In Large Cages Make Sure Padlocked" to remember the reactivity of metals : Potassium Sodium Calcium Magnesium Aluminum Zinc Iron Lead Copper Mercury Silver Platinum.
Harry He Likes Beer Bottle Cold, Not Over Frothy. Nelly's Nanny Might, Although Silly Person, She Climbs Around Kinky Caves; for the first 20 Elements of the Periodic Table. (Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminium, Silicon, Phosphorus, Sulphur, Chlorine, Argon, Potassium, Calcium.)
He Has Light Brain But Can Not Offer Full Nine Subjects, May All Senior Professional Scientists Come And Protect Chemistry; also for the first 20 Elements of the Periodic Table.
"All Altruists Gladly Make Gum In Gallon Tanks" To remember which form (D or L) the 8 aldohexoses are in for Organic Chemistry; Allose, Altrose, Glucose, Mannose, Gulose, Idose, Galactose, Talose).
"H.HeLi, B.BCNOF and NeNa MgAl SiPS ClArKCa" Another for the first 20 Elements of the Periodic Table
"Have No Fear Of Ice Cold Beer" diatomic elements- H, N, F, O, I, Cl, Br (Beer(liquid), Ice (solid))
"Really Great (and Noble) Kings Don't Forget (Ladies') Birthdays" - how to remember the products of fractional distillation of crude oil (refinery gases, gasoline, naphtha, kerosine, diesel oil, fuel oil, lubricating fraction and bitumen)
"LEO said GER" - Losing Electrons is Oxidation, Gaining Electrons is Reduction
"OILRiG" - Oxidation is losing electrons, Reduction is gaining electrons. 'I' in Oil stands for increase in Electronegativity Value.
Group 17 in periodic table : Fluorine, Chlorine, Bromine, Iodine, Astatine (Friends Care Bestfriends Iove Always)
How to set your clock to accommodate the shift to and from daylight saving time: "Spring forward. Fall back" or "Spring ahead, Fall behind."
Another way to remember electronic color code: B.B.ROY of Great Britain has Very Good Wife wearing Gold and Silver Necklace that represents Black(0), Brown(1), Red(2), Orange(3), Yellow(4), Green(5), Blue(6), Violet(7), Gray(8), White(9), Gold(5%), Silver(10%), None(20%)
An Indian variation for this color code: B.B.ROYGoing to Bombay Via Gate Way of India, representing Black(0), Brown(1), Red(2), Orange(3), Yellow(4), Green(5), Blue(6), Violet(7), Gray(8), White(9)
A mnemonic to remember which way to turn common (right-handed) screws and nuts, including light bulbs, is "Righty tighty, lefty loosey"; another is "right on, left off"
To remember all of the actors who have played the Doctor in the BBC show "Doctor Who" in chronological order. (Hartnell, Troughton, Pertwee, Baker, Davison, Baker, McCoy, McGann, Eccleston, Tennant, Smith, Capaldi.)
How to punish bad Daleks before many million earthlings truly see clearly.
To remember which direction Latitude and Longitude are: Latus is Latin for side - latitude lines go from side to side (EW). Longitude lines seem longer (top to bottom, NS). Remember "Lat is Fat" - Latitude goes around the equator belt. Also, Latitude is FLATitude.
To remember which direction Latitude and Longitude are: The "n" in longitude may stand for North (and South), the direction that Longitude lines cover on a map.
To remember the Great Lakes in an arbitrary order: "HOMES". (Huron, Ontario, Michigan, Erie, Superior)
To remember the Great Lakes in order of decreasing surface area: "Super Heroes Must Eat Oats". (Superior, Huron, Michigan, Erie, Ontario)
To remember the Great Lakes in order from west to east: Superman helps everyone (Superior, Michigan, Huron, Erie, Ontario)
For the streets running east and west in downtown Seattle, running south to north: "Jesus Christ Made Seattle Under Pressure" (Jefferson/James, Cherry/Columbia, Marion/Madison, Spring/Seneca, University/Union, Pike/Pine)
To remember the compass directions, starting at the top and going clockwise (NESW, North, East, South, West): Never Eat Soggy Waffles (or Weetbix), Never Eat Shredded Wheat, Naughty Elephants Squirt Water, Never Eat Slimy Worms
To remember Northern European countries, from West to East: "No Soup For Russia" (Norway, Sweden, Finland, Russia)
To remember countries located around the Adriatic Sea (in clockwise direction): "Incredibly Slimy Cockroach Bit My Aunt" (Italia, Slovenia, Croatia, Bosnia and Herzegovina, Montenegro, Albania)
To remember the names of the Seven hills of Rome: "Can Queen Victoria Eat Cold Apple Pie?" (Capitoline, Quirinal, Viminal, Esquiline, Caelian, Aventine, and Palatine)
To help you remember the names of the 7 continents, use the mnemonic (Always Eat An Apple, Says ANurse!) [Asia, Europe, Australia, Africa, South America, Antarctica, North America]
The geological periods of the Paleozoic to Cenozoic eras are Precambrian, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous:
Pregnant Camels Ordinarily Sit Down Carefully, Perhaps Their Joints Creak
The 'mites go up and the 'tites come down. When one has ants in one's pants, the mites go up and the tights come down. (Note: In a strict scientific sense, a mite is not an ant, although "mite" in common speech can refer to any small creature.)
Stalactites hang tight, hang down like tights on a line; stalagmitesmight bite (if you sit on them), might reach the roof.
Tights hang from the Ceiling, and Mites crawling around on the Ground
You need might to do push-ups (from the floor). You must hold tight doing chin-ups (off the ceiling).
Stalactites are on the ceiling. Stalagmites are on the ground.
Stalactites cling tight to the ceiling; stalagmitesmight reach the ceiling.
543210 is a mnemonic for the date when prohibition was lifted in Finland: 5th April (4th month) 1932 at 10 in the morning (local time).
Wives of Henry VIII: divorced, beheaded, died, divorced, beheaded, survived.
All Barons Should Carry Heavy Parcels. Aragon, Boleyn, Seymour, Cleves, Howard, Parr.
The first eight U.S. presidents: Will a jolly man make a jolly visitor? (George Washington, John Adams, Thomas Jefferson, James Madison, James Monroe, John Quincy Adams, Andrew Jackson, Martin Van Buren)
Remembering the definitions of sine, cosine, and tangent can be done by memorizing SOH-CAH-TOA, which helps to remind you that Sine = Opposite over Hypotenuse, Cosine = Adjacent over Hypotenuse, and Tangent = Opposite over Adjacent.
Other ways to remember SOH-CAH-TOA are:
Oranges Have Segments, Apples Have Cores, and Oats.
Apples Have Cores, Oranges Have Segments, Oranges Are Tangy.
Apples Have Cores, Oranges Have Segments, Also Tangy.
Some Old Horse Came A-Hoppin' Through Our Alley
Silly Old Henry Can't Add Hundreds, Tens Or Anything
Simple Old 'Herman Carries AHuge Tub Of Apples
Silly Old Harry Caught AHerring Trawling Off America
Silly Old Hag Caught All Her Teeth On Apples
Some Old Hags Can't Always Hide Their Old Age
Some Old Hippie Caught Another Hippie Tripping Out on Acid
Could AHungry Stupid Ostrich Have Taken Over America. (CAH-SOH-TOA)
Some People Have Curly Brown Hair Turned Permanently Black
Sex On Hard Concrete Always Hurts The Other's Ass
Some Old Hippy Caught Another Hippy Tripping On Acid
Another technique is to line up the abbreviations slightly differently: SCT,O/H,A/H,O/A, which stands for Sine Cosine Tangent, Opposite/Hypotenuse, Adjacent/Hypotenuse, Opposite/Adjacent. This mnemonic, "SCTOHAHOA", can be committed to memory as "Sally Can Tell, Oscar Has A Hat On Always". Some students use "Hard On" as opposed to "Hat On", finding that sexual and humorous mnemonics are often easier to recall.
Some people have (sine = perpendicular / hypotenuse) curly brown hair (cosine = base / hypotenuse) through proper brushing (tangent = perpendicular / base) is also used for this purpose.
ASTC stands for All Students Take Calculus, which represents the trigonometric functions that are positive in each quadrant, beginning with the top right and continuing counterclockwise: All, sine, cosine, tangent.
For remembering the order of taking the derivative of a quotient in calculus, the phrase "lo-di-hi minus hi-di-lo all over lo squared" can be useful, where lo means the bottom, hi means the top, and di means the derivative. So,
Another phrase that one may use is: "Bottom d Top, Top d bottom", where "d" stands for derivative (note that this mnemonic does not include the crucial dividing by the bottom squared). Another phrase memorable for sounding like calling a square dance is "Low d high less high d low, Draw the line and square below."
THE LAD ZAPPA is a mnemonic for the first 11 (and most important) Ionian philosophers: Thales, Heraclitus, Empedocles, Leucippus, Anaximander, Democritus, Zeno, Anaximenes, Protagoras, Parmenides, Anaxagoras .
THE PLAZA PAD is another mnemonic for the first 11 (and most important) Ionian philosophers: Thales, Heraclitus, Empedocles, Protagoras, Leucippus, Anaximander, Zeno, Anaximenes, Parmenides, Anaxagoras, Democritus.
"Richard of York gave battle in vain" to remember the colors in order in a rainbow (red, orange, yellow, green, blue, indigo, violet).
The fictitious name Roy G. Biv is also used to remember the order of the colors of the rainbow.
Microwave frequency bands
Mnemonic for microwave frequency bands in the increasing wavelengths (decreasing frequencies), which are Ku band, X band, C band, S band, L band, respectively is given by, King Xerxes Can Seduce Lovely princesses"
The phrase "We guarantee certainty, clearly referring to this light mnemonic." represents the speed of light in meters per second through the number of letters in each word: 299,792,458.
The position of the hands when making the Christian sign of the cross can be remembered by the phrase:
Spectacles (forehead), testicles (stomach), wallet (left shoulder - as when a man's wallet would be carried in the left breast pocket of his jacket), and watch (right shoulder - as when a pocket watch was carried in the right vest pocket)
To remember how many books are in both the Old and New Testaments of the Christian Bible, remember the following equation: (Old Testament = 39 books, New Testament = 3 x 9 = 27 books)
To recall the Five Pillars of Islam, remember the following sentence: Fast People Can't Feed Porcupines!
Characteristic sequence of letters
I always comes before E (but after C, E comes before I)
In most words like friend, field, piece,pierce, mischief, thief, tier, it is "i" which comes before "e". But on some words with c just before the pair of e and i, like receive, perceive, "e" comes before "i". This can be remembered by the following mnemonic,
I before E, except after C
But this is not always obeyed as in case of weird and weigh,weight,height,neighbor etc. and can be remembered by extending that mnemonic as given below
I before E, except after C
Or when sounded "A" as in neighbor, weigh and weight
Or when sounded like "eye" as in height
And "weird" is just weird
Another variant, which avoids confusion when the two letters represent different sounds instead of a single sound, as in atheist or being, runs
When it says ee
Put i before e
But not after c
Where ever there is a Q there is a U too
Most frequently u follows q. e.g.: Que, queen, question, quack, quark, quartz, quarry, quit, Pique, torque, macaque, exchequer. Hence the mnemonic:
There was a farmer named Sep and one day his wife saw a rat. She yelled, “Sep! A rat – E!!!”
Distinguishing between similar words
Difference between Advice & Advise, Practice & Practise, Licence & License etc.
Advice, Practice, Licence etc. (those with c) are nouns and Advise, Practise, License etc. are verbs.
One way of remembering this is that the word ‘noun’ comes before the word ‘verb’ in the dictionary; likewise ‘c’ comes before ‘s’, so the nouns are ‘practice,licence,advice’ and the verbs are ‘practise,license,advise’.
"Red, Right, Return" reminds the skipper entering ("returning to") an IALA region B port to keep red markers to the starboard of the vessel.
The phrase "there's always some red port (wine) left" is used to remember the basics in seafaring. "Red" refers to the color of navigation lights on the port (left) side of a vessel (as opposed to green on the starboard side).
"Nuclear Restrictions Constrain Fishing and Sailing, People Say" is used to encode the "order of priority" for which vessels have right of way (earlier in the list has priority over later): Not under command; Restricted; Constrained by draft; Fishing vessel; Sailboat; Powerboat; Seaplane.
^E.D. Hirsch, Jr., The Dictionary of Cultural Literacy (Houghton Mifflin, 1993); E.D. Hirsch, Jr., "What Your Fifth Grader Needs to Know: Fundamentals of a Good Fifth-grade Education" (Doubleday, 2005) p308
^Scott Hagwood, Memory Power: You Can Develop a Great Memory--America's Grand Master Shows You How (Simon and Schuster, 2007)
^Robert A. Wallace, et al., Biology, the Science of Life (Scott, Foresman, 1986) p398
^Textbook of Basic Nursing by Caroline Bunker Rosdahl and Mary T. Kowalski (Lippincott Williams & Wilkins, 2007) p194; Medical Terminology for Dummies by Beverley Henderson and Jennifer Dorsey (For Dummies, 2008) p327
^Caroline Bunker Rosdahl and Mary T. Kowalski, Textbook of Basic Nursing (Lippincott Williams & Wilkins, 2007) p194