@oneplusepsilon

Tutor math K-12+ and elementary reading || Taught high school math || Like rekenrek, cuisenaire, numicon

 USA
Joined January 2019
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  • Following412
  • Followers256
116Media
クラインの壺を観測した
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À deux doigts de réinventer la roue carrée avec les jeux de mon fils
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Une belle idée en #géométrie
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"Saami" is a low-floor high-ceiling numbers game that is accessible to both toddlers as well as challenging for adults. My 2 year old can understand it and yet I have not made it past level 25. Try it! numbershapes.com/interactive… #elemmathchat #maths #mtbos
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Replying to @oneplusepsilon @Earl41045838 @doingmath @mpershan
I do think part of this conversation should be about why STEM higher ed is configured in such a way that these high-privilege experiences are expected/necessary. (My bias is I never did any of them and still did a math major at a selective school)
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Dot Talks: a mix-and-match book
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I'm looking for games that involve Cuisenaire Rods but I'm beginning to think they don't exist. There's a ton of exploration and play...strategy-based games, not so much. What's your favorite game that incorporates Cuisenaire Rods? #elemathchat #iteachmath
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On a whim and at a loose end, I had my 6yo cut a scrappy piece of paper into pieces (he cut 30, as it happens) and I wrote numbers on them fairly arbitrarily, thinking I could show him some sorting algorithms. Well, wow! #tmwyk 1/n
30 pieces of paper with 3 digit numbers written on, arranged randomly.

ALT 30 pieces of paper with 3 digit numbers written on, arranged randomly.

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Here it is all in one place: the true geometric understanding of the equation of the parabola. I typed this all up on the math stack exchange. @oneplusepsilon @benjamindickman math.stackexchange.com/a/434…
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Replying to @benjamindickman
How about defining everything based on probability?! We define *e* to be the reciprocal of the limit as n→∞ of the probability that, when n people mix up their hats randomly, no one will get their own hat back. ...
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Geometric derivation of the equation of a parabola. geogebra.org/geometry/mn9wab…
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2/10 The bifold door is an isosceles triangle that hinges open as one base vertex is dragged across. I noticed that the first part of the door traces a circular arc. But what curve does the second part of the door create?
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Interesting Bingo #mathgame from @oneplusepsilon (I know, right?) with multiple layers of thinking. oneplusepsilon.com/barnyard-…
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Final project in #calculus: find a creative way to synthesize what you learned. One group made this “Calculus UNO” deck! (You can’t play a card until you figure out the answer, lol.) Assessments that allow #creativity are opportunities for joy
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Replying to @howie_hua
When first introducing, I like writing it out: 3 fourths, like 3 apples. This, which is from Caleb Gattegno shared by @LearningMaths @Simon_Gregg
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If you like the blueprint above of Alexander Graham Bell's fractal flying machine, check out this prototype from 1909. Whoa! More info at history-of-mathematics.org/l…
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The hardest parts of the multiplication table for 5-8 y.o.'s. #math #edchat Source: flurrished.co.uk/blog/2013/0… #dataviz
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Change a movie title to #MakeAMathMovie. Here's my contribution complete with a movie poster. e^t
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This is a bunch of ants forming a hanging chain. It's a c𝒂𝒏𝒕enary!
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If you have 5 or 10 minutes and a computer, why don't you try our new test of geometric working memory? neurospin-data.cea.fr/exp/ma… This research, part of the PhD work of @MSableMeyer, evaluates the human capacity to grasp and remember a geometric pattern in a fraction of a second.
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