James Cleveland-Tran

@jclevelandtran.com

587 Followers 144 Following

Math Educator, Writer, Wonderer #MTBoS 🏳️‍🌈 Into making math games and political change

Horizontal axis: “length of student response” Vertical axis: “likelihood of being 100% correct” The graph is hill-shaped.
A twenty-four carton of eggs, 4x6, with most of the eggs missing. Remaining eggs go diagonally inwards from the corners.
A triangle on a grid. In a cone out from each vertex is a white space. Fanning out from each side is a red space. The interior of the triangle is white.
Because n is the median, the middle two numbers must be n. To the left are some numbers, n/2 - 1 of them. To the right, n/2 - 2 numbers, then the max. Because we want to maximize the max, we want to minimize all those numbers to the right. Therefore they all equal n. We also want to minimize the numbers on the left. Because there are fewer of them than there are Ns, we can set them all to the min, called a, while keeping n the unique mode.
"...New York mayor, who spells "de" with a lowercase "d" and inserts a space between the two parts of his surname. (In DeBlasio's view, "low-class Italians use a little d.")"
h(x) = f(x)/g(x) h'(x) = (f'(x) - g'(x)h(x))/g(x)
In the Pokémon TCG Pocket app, I would earn 10 points for winning a match and lose 7 points when losing a match. However, you also get a win streak bonus – the second win in a row gets a bonus of 3 points, the third gets 6, the fourth 9, and the fifth (and all subsequent) gets 12. Assuming I have a win rate of 50% (which I did at the time), what’s my expected value for playing n games? (How many games would I expect to play to earn x points?)
Photo of data table which can also be found here: https://docs.google.com/spreadsheets/d/1pflkRhCslWUs1MfpabUb0lhLer6Or7UVFaap1EsHwVs/edit?gid=0#gid=0
The game Hexapolis, in a wooden hex box with stacks of wooden hex pieces.
Except from Wikipedia on the Jefferson Method. "This pathology led to widespread mockery of Jefferson's method when it was learned Jefferson's method could "round" New York's apportionment of 40.5 up to 42, with Senator Mahlon Dickerson saying the extra seat must come from the "ghosts of departed representatives."
A menu with things like "Additional sauce, 3/4." "Tavern Knots, 9 1/2"
An exhibit in the Strong National Museum of Play with a recumbent bicycle asking "Is This a Toy?"
Three foxes made of small triangles. The triangles become spread out as you approach the tail, giving a sense of speed
A Venn diagram of three colors. Yellow is “word”, Blue is “attribute”, Red is “context” Yellow contains moon, pretzel, bell, museum, chalkboard, brick, field Blue contains moon, igloo, yoyo, pretzel, bell, pasta, pancake Res contains pancake, pasta, pretzel, bell, museum, field, brick, chalkboard, saw, robot, candle, microscope None contains gargoyle
Sign on hotel bathroom mirror with shower handle instructions. In the reflection can also be seen the towel rack inside the shower.
Image of the shelf I put up im the kitchen with 6 pots and pans hanging from it
An excerpt from “It Takes Two to Tumble” by Cat Sebastian "There's a gooseberry custard tart on the sideboard, but something went terribly wrong when Mrs. Morris sliced it," Ben said to no one in particular. "She cut it into eight slices." Out of the corner of his eye he saw Jamie watch him intently. Jamie knew this as the preamble to one of his favorite games. "That's fine by me," Jamie said. "Peg won't get any if she launches those peas at me, which leaves two slices each for the rest of us." "Quite right, but she isn't going to launch peas or anything else." Out of the corner of his eye, he saw Peggy rest her spoon on her plate. "One and three-fifths of a slice for each of us," Jamie said promptly. "But what if I decide to allocate the pie according to weight? That seems only fair. I'd say I'm about twelve stone, and so is your father." The mere estimation of what the captain might have beneath his clothes by way of sinew and muscle was enough to make Ben's cheeks heat. "You and Peggy are maybe four stone apiece and Ned's about seven." "That's about a tenth of the pie each for me and Peg." "Ah, but I don't have tenths, I have eighths." Jamie made an impatient sound. "Remove a quarter of an eighth and you'll have a tenth." "Which is grossly unfair because I don't even care for gooseberry tart and I don't see why I ought to have twice as much—" "Three times as much," Jamie corrected.
A diagram of a triangle with a hand-drawn bug at various points around it. The bug gets thinner as it goes counterclockwise from the lower left corner, point A.
Photo of the whiteboard with the below written: Increasing: (-infinity, 0) U (1, infinity) Decreasing: (0, 1) Inflection point: x= 0.75 Interval(s) where function Concave Up (0.75,inf) but in a heart Concave Down (-inf, 0.75) but in a heart
A slice of pizza folded normally (that is, with the fold down the length of the slice)
Simple Sabotage Field Manual 3. MOTIVATING THE SABOTEUR To incite the citizen to the active practice of simple sabotage and to keep him prac- ticing that sabotage over sustained periods is a special problem. Simple sabotage is often an act which the citizen performs according to his own initiative and inclination. Acts of destruction do not bring him any personal gain and may be completely foreign to his habitually conservationist attitude toward materials and tools. Purposeful stupidity is contrary to human nature. He frequently needs pressure, stimulation or assurance, and information and suggestions regarding feasi- ble methods of simple sabotage. (1) Personal Motives (a) The ordinary citizen very probably has no immediate personal motive for com- mitting simple sabotage. Instead, he must be made to anticipate indirect personal gain, such as might come with enemy evacuation or destruction of the ruling govern- ment group. Gains should be stated as specifically as possible for the area addressed: simple sabotage will hasten the day when Commissioner X and his deputies Y and Z will be thrown out, when particularly obnoxious decrees and restrictions will be abol- ished, when food will arrive, and so on. Abstract verbalizations about personal liberty, freedom of the press, and so on, will not be convincing in most parts of the world. In many areas they will not even be comprehensible. (b) Since the effect of his own acts is limited, the saboteur may become discouraged unless he feels that he is a member of a large, though unseen, group of saboteurs operating against the enemy or the government of his own country and elsewhere. This can be conveyed indirectly: suggestions which he reads and hears can include observations that a particular technique has been successful in this or that district. Even if the technique is not applicable to his surroundings, another's success will encourage him to attempt similar acts. It also can be conveyed directly: statements praising the effectiveness of simple sabotage can be contrived which will be pub- lished by white radio, freedom stations, and the subversive press. Estimates of the proportion of the population engaged in sabotage can be disseminated. Instances of successful sabotage already are being broadcast by white radio and freedom stations, and this should be continued and expanded where compatible with security. (c) More important than (a) or (b) would be to create a situation in which the citi- zen-saboteur acquires a sense of responsibility and begins to educate others in sim- ple sabotage.
A circle of radius 3 centered at the origin. The function y=0.1x^2-1/x is contained within, as well as 120 tangent lines to that function in various colors.
Today's Nancy comic by Olivia Jaimes. Panel 1: Nancy holds a pizza cutter over a pizza, Aunt Fritzi says: "No funny business when you cut up the pizza, Nancy" Panel 2: Fritzi saying "Be symmetrical" Panel 3: Fritzi saying "Make the pieces the same shape" Panel 4: Fritzi saying "And make sure that Sluggo's slice takes up just as much room on the table as yours does" Panel 5: Sluggo frowning in front of the bottom half of the pizza, while to the side Nancy has fork in hand ready to eat the top half
A graph of "likelihood of being 100% correct" vs "length of student response" which is in an upsidedown parabola shape
Six left shoes in a row with KN95 masks sitting in their openings: red, yellow, green, blue, purple, black
A box of Magic Tower blocks with a 3-4-5 triangle on the side
LED figure of a toy soldier but I guess it uses mirrors or something because it looks like it has depth even though it is flat
A blue cocktail with a plastic shark on top, with red fruit puree pouring out of the shark's mouth
Average Rate of Change Auction Catalog Lot 1: a=-2, f(x)=4ln(x) - x + 2 Lot 2: f(x)=x^3-3x^2+4, b=2 Lot 3: b=4, f(x)=e^x Lot 4: 1.5b, Absolute value Lot 5: a=-3, f(x)=2cos(x) Lot 6: b=3, value ± 1 Lot 7: b=6, f(x) = -2x + 4 Lot 8: a = -5, f(x) = -x^2 + 4 Lot 9: a=1, -a Lot 10: b=5, f(x) = ceil(0.5x)
Four men wiggling their fingers weirdly. From Yakitate Japan
Identical library bins, except one says “trash” and the other says”book drop”
Mold-o-rama machine at the Museum of Science and Industry
Compass rose at the top of the subway entrance in Chicago
A parking garage with various equations written around the top
Triangular root of 10 is 4 - the triangular root symbol is like the square root symbol, but with a horizontal line to turn the check part into a triangle
Image from a symbolic design exhibit Top: black triangle outline, point up "transformer" (electrical) "Head" (Biology) "Fire" (alchemy) "Hail" (weather) Second symbol: red triangle outline, point up "warning! Danger!" (Inscribed with specific hazard) (Us and uk traffic signs) Third symbol: red solid triangle point down "Planned parenthood" (India) "Stop!" (Japanese traffic signs) Last symbol: triangle made of three overlaid quadrilaterals like strips "Probably safe to land here" (ground to air emergency code"
List of congruent statements TIME ITEM EMIT MITE EMIT ITEM ITEM MITE TIME EMIT TIME MITE MANE NAME MANE AMEN NAME AMEN ARTS TSAR RATS STAR RATS TARS STAR TARS LEIS ISLE AGED EGAD CODE DECO
Cat mountain-goating its way up the front door of a house between the main door and the glass door
MTA mask wearing PsA; second figure has mask over nose but not mouth