DrTCombs,
@DrTCombs@transportation.social avatar

Hi people! If you had half an hour a handful of incredibly bright, incredibly bored 10 year olds, what math would you teach them?

The 4th grade math curriculum is letting these kids down, and they are hungry for a challenge...and to see that math can be fun again!

in advance!

bluGill,
bluGill avatar

@DrTCombs my 10 year old suggests algebra 1. He is in 5th grade taking 6th grade math, not sure if it helps your 4th graders.

DrTCombs,
@DrTCombs@transportation.social avatar

My head is spinning. My #FediFriends are amazing.

Proving something fundamental (like the circumference of the earth!) or teaching dimensional analysis with animals, or graph theory, or simultaneous equations (which their teacher has told them to just guess at), or, well, y'all just have to read the thread. There's some incredibly fun stuff in here.

albertcardona, (edited )
@albertcardona@mathstodon.xyz avatar

@DrTCombs

The birthday paradox is fun and easy to explain https://en.m.wikipedia.org/wiki/Birthday_problem

That a US state attempted to legislate a specific value for the number Pi and its possible consequences is also hilarious https://en.m.wikipedia.org/wiki/Indiana_pi_bill and gives itself to quite the discussion.

That a math theorem was proven by a US congressman, James Garfield, over a century ago https://en.m.wikipedia.org/wiki/Garfield's_proof_of_the_Pythagorean_theorem makes for another good discussion: it’s the Pythagoras theorem (and the proof is intuitive and easy to explain by drawing and measuring areas of triangles), and sets a baseline of expectations for the intellectual capabilities of anyone running for office … or it should.

DrTCombs,
@DrTCombs@transportation.social avatar

@albertcardona so much good in here. And these are quick kids -- I think the multiple layers of ridiculousness in the attempted legislation of pi would not be lost on them!

rymican,
@rymican@bne.social avatar

@DrTCombs There's a lot of mathematics to be learnt in the game of Hex. easy and fun to learn for kids of this age. just copy the game board as handouts. https://en.wikipedia.org/wiki/Hex_(board_game)

DrTCombs,
@DrTCombs@transportation.social avatar

@rymican I've never seen this game, but it looks AWESOME! thank you!!!

thewriterced,

@DrTCombs I've always liked the "counting to 31 on one hand" trick... and the kids get a kick out of number four.

DrTCombs,
@DrTCombs@transportation.social avatar

@thewriterced the what trick? I need to know this!!!

Andres4NY,
@Andres4NY@social.ridetrans.it avatar

@DrTCombs My wife says, "I would do the derivation of e. There's a really cute derivation of e... actually multiple cute derivations of e.

Maybe also derive the pythagorean theorem? There's a geometric proof. If they haven't seen pi by then, they should be introduced to it. They wouldn't understand it fully, but I would show them a youtube video of the harmonics of the riemann zeta function. It's so amazing to see. OOH nonlinear dynamics the butterfly oscillator!"

(And then I cut her off.)

Iragersh,
@Iragersh@mstdn.social avatar

@Andres4NY @DrTCombs always loved the derivation of area under a curve as a summation of infinitely small rectangles.

DrTCombs,
@DrTCombs@transportation.social avatar

@Iragersh @Andres4NY I need to meet your wife.

also, the pythagorean theorem would be FUN!

(the lucky person who gets to work with these kids will be my mom, a retired high school math teacher, so this is well within her wheel house)

gregtitus,
@gregtitus@social.coop avatar

@DrTCombs Eulerian circuits and the 7 bridges of Konigsberg! It's a simple enough problem to describe to smart kids of that age, and demonstrates some fundamental graph theory, which is an entirely different branch of math than most kids ever get exposed to.

katzenschiff,
@katzenschiff@chaos.social avatar

@gregtitus @DrTCombs this one, or the little Gauss summation, or the map colouring problem

DrTCombs,
@DrTCombs@transportation.social avatar

@katzenschiff @gregtitus ooooooooooh what is the map coloring problem?

enobacon,
@enobacon@urbanists.social avatar

@DrTCombs multiplying and dividing silly things like fractions of cats and dogs might be fun, story problems, a taste of algebra, and is analogous to multiplying units, which helps keep your conversions right since cat/cat = 1... Like 3/4 liters water balloon per dog * 2 dogs per 4 cats... IDK that example needs work

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