Gabe Rosenberg

Mathematician, NYC Teacher, #MfAProud, and Illustrative Mathematics curriculum writer. he/his or they/their

[Gabe Rosenberg @CAnalytic]

@park_star @Trianglemancsd I can't make sense of it, but can explain the tally. You can nominate anyone (even if they don't want--like Hern) and vote for anyone even if not nominated. The 12 "others" were votes for Rep-Elect Donalds who had been nominated in previous rounds. Present is an abstention.

[Rice Football @RiceFootball]

Owls Take Flight To @LT_Bowl!

Visit https://t.co/mlc4ot6fkU for more info!

📰 » https://t.co/ankL7YdOu3

#GoOwls👐 x #RFND

[Rice Volleyball @RiceVolleyball]

See y'all in the next round!!!

[Gabe Rosenberg @CAnalytic]

@truxtonstables @RiceAthletics @jppalmCBS I forgot Buffalo gets another crack next week (and will be favored) against Akron. And UL and USM both won. So need either Tennessee over Vandy or Pitt over Miami.

[Gabe Rosenberg @CAnalytic]

@truxtonstables @RiceAthletics @jppalmcbs Going into this week there were 9 bowl spots left. Mizzou, Miami (OH), UAB, and the App St/Ga Southern winner take 4, but now only 4 teams even possible left (UL, USM, Vandy, Miami). So Rice is guaranteed based on APR?! Or did I miss one?

[Gabe Rosenberg @CAnalytic]

So do I stay up until 2am (EST)?

[Gabe Rosenberg @CAnalytic]

@mpershan I believe @pgliljedahl is defining mimicking as specifically copying without thinking. And I don't believe you do that. From your writings it's clear that you are always thinking about and questioning those things you take from others.

[Raidió na Gaeltachta @RTERnaG]

Bhí @rabbicece linn inniu, Gaeilgeoir as Meiriceá agus amhránaí sean-nóis

@rte @fleadhcheoil #fleadh22

[Gabe Rosenberg @CAnalytic]

So yesterday, after coming out of a rough spot, my wife @rabbicece saw an amazing rainbow over her lake. Less than 2 hours later, over 2,000 miles away, I saw a stunning rainbow over my mountain. How awesome is that?

[Gabe Rosenberg @CAnalytic]

Thank you @Cindablock17 for sharing some of your notes here.

[@[email protected] @dyong]

#PCMI2022 #TLPsummer Day 2 morning math underway! You can do math with us via https://t.co/qMovXiLskE ==> Resources ==> Morning Math. @CAnalytic @bowenkerins

[Patrick Honner @MrHonner]

Welcome to the NYS Algebra 1 Regents exam!

[Gabe Rosenberg @CAnalytic]

Day 1 of Morning Math was so much fun. So many conjectures being debated, tested, and revised. Here's the direct link to the Morning Math problems...https://t.co/mUjsVSFHaI

[@[email protected] @dyong]

Hello #iteachmath #MTBoS and #PCMITLP alums! If you want to do math along with your friends at Park City Math Institute Teacher Leadership Program this summer, visit https://t.co/BfY8J18HKg, click on Resources ==> Morning Math. We just had a lovely Day #1! @bowenkerins @CAnalytic

[Gabe Rosenberg @CAnalytic]

@Mathowitz @jamestanton @JenniferWathall @GlobalMathProj Well, I think in terms of circles and not triangles, but the point about thinking of secant in terms of cosine still holds. As I said, though, the conflict however is that the most common reason I use arcsecant is substitutions also involving tangent and square roots.

[Gabe Rosenberg @CAnalytic]

@Mathowitz @jamestanton @JenniferWathall @GlobalMathProj Oops. I meant it would be nice if arccos(1/x) = arcsec(x) which would call for range of arcsec being 0 to pi (except pi/2), but the tan issue wants it to be 0 to pi/2 and pi to 3pi/2.

[Gabe Rosenberg @CAnalytic]

@Mathowitz @jamestanton @JenniferWathall @GlobalMathProj Which leads to question of how to best define arcsec. On the one hand it would be nice if cos(arcsec 1/x) was x. On the other hand, it wold be nice if tan(arcsec x) was positive. But can't have both. Must choose. (I vote for latter, but not a "natural" call)

[Gabe Rosenberg @CAnalytic]

@Mathowitz @jamestanton @JenniferWathall @GlobalMathProj I vote that as the number 1 reason, but also works well that sin(arccos x) and cos(arcsin x) are always positive.

[Gabe Rosenberg @CAnalytic]

@peterrowlett Agree it's no prism as there aren't parallel bases, but you could form it as a triangular prism with oblique rectangular pyramids attached at each end.

[Gabe Rosenberg @CAnalytic]

@MrLarrieu @bowenkerins Two of the increases are percentages, but the other two are a flat increase or decrease of $20 so it's addition and not multiplication.