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Preview: dansmathcast


Published: Fri, 19 Sep 2008 17:07:00 +0000

Last Build Date: Sun, 11 Sep 2016 19:42:58 +0000

Copyright: dan bach

dansmath interview

Fri, 19 Sep 2008 17:07:00 +0000

hey dansmathfans - i was just interviewed for iProng magazine (by bill palmer) about my website and my podcast, and there i am alongside swimmer Natalie Coughlin and rock legend Journey! visit and look for the sept. 18, 2008 issue. read all about me, my background, and the making of the dansmath empire!

at new media expo!

Thu, 14 Aug 2008 23:08:00 +0000

some serious podfading this year; i am in production of show #34 but left it to go to las vegas. i just got interviewed on twitlive with leo laporte (older picture at right) and on iprong radio with bill palmer. i'm enjoying being recognized around the convention center!

i'm a joiner, not a fighter

Mon, 02 Jun 2008 17:42:00 +0000

ok, i know there have been no podcasts for a while ... i am putting show #34 together and i have also joined some groups: , , , , and ... the last two or three are online teacher-resource-learning-community-social things!

in school again, 2008 style

Thu, 24 Jan 2008 15:50:00 +0000

only a true math geek would wear a "FOIL" shirt to a public gathering / "First, Outside, Inside, Last" takes on a new meaning at my favorite Chinese restaurant / listen to episode 31 for the occasion / working on episode 34 to "keep algebra fresh" in 2008 %;-}


Fri, 04 Jan 2008 02:30:00 +0000

dansmathcast 08 - episode 33 - at long last / this time we look into opposites, inverses, and duals / trig form of complex numbers / math lottery confusion / solving the general cubic equation / and a repurposed math joke! visit for free lessons and contest !

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happy new year from dan

Mon, 31 Dec 2007 14:24:00 +0000

happy 2008 = 2 * 2 * 2 * 251 from all of us at (me, myself and \/(-1).) dan is recording podcast 33 and it will be out very soon, so warm up those ipods!

dan's math vs art gallery page

Mon, 05 Nov 2007 17:31:00 +0000

hey dansmathfans / i have been meaning to put up a math picture gallery for a long time / here is a start / go to and click the picture gallery button / four ways to view a 3D functioni / those nested circles / poking holes in polyhedra / morphed curves and more !


Sun, 21 Oct 2007 15:05:00 +0000

dansmathcast is back! / dan brags about his presentation at the podcast expo / logic for the masses / solving trig equations / reader e-mail / graphing surfaces in 3D / and the dangers of pickles! / welcome dan 'bach' from his summer break.

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Mon, 15 Oct 2007 18:22:00 +0000

dan is still podcasting! / i am returning after my summer hiatus / this is a short verbal note to encourage you to stay with me! / blog at / show #32 appearing soon!

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bach is back at podcast expo...

Fri, 28 Sep 2007 16:31:00 +0000

hey dansmathcast fans / i am down at the podcast expo in \"spacious\" Ontario, Calif. / i tried to get a show out before i left but ran out of time / i\'ll be back from my summer hiatus next week with more math content for you!

yes i'm alive!

Wed, 22 Aug 2007 07:53:00 +0000

sorry dansmathheds - i was away from the microphone for a couple of months there - i was finishing up my sabbatical project (writing another math book) and getting ready to start school for the first time in 15 months - "teaching again now" as i would say at - podcast 32 is on its way to you - thanks for your patience, fellow math geeks!

iWant my iPhone!

Thu, 28 Jun 2007 16:41:00 +0000

tomorrow is the big day for the small uber-gadget / feel free to download dansmathcast onto your iPhone or Treo or iPod / show the podcast to your favorite math geek friend / iDare you to listen and send in an audio comment or question! /


Sat, 09 Jun 2007 02:24:00 +0000

dansmathcast 2^5 - 1 / a math nerd reunion / oddball measures of length / trig identities and addition formulas / math on other podcasts / what are dynamical systems? / and a self-made math joke / visit and learn!

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nba math contest

Sun, 20 May 2007 09:32:00 +0000

you can win 5 or 10 iTunes songs by being first to answer the challenge problem in dansmathcast #30 / listen for nba math in my "mathematics for the masses" section / flavorful podcast 31 is on its way / thank you golden state warriors for a great 2006-07 season - from your playoff-starved fans!


Sun, 06 May 2007 22:41:00 +0000

dansmathcast %30 / this time we uncover a percentage scandal / dansmath now on frappr and twitter / math for the nba masses / are you smarter than a contestant? / we trig-stalk the general triangle / advanced topic in statistics - goodness of fit / tune in and win prizes for being first to solve a b-ball problem!

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podcast hotel this weekend!

Tue, 17 Apr 2007 06:40:00 +0000

a community event in san francisco! (not frisco, not san fran) the podcast hotel will "celebrate indie culture, podcasting, digital music, and the arts." dansmathcast will be represented there with schwag: cool new lapel buttons, green/purple cards, and dan him(my)self. go to for more!


Fri, 06 Apr 2007 22:29:00 +0000

dansmathcast@29 / it's time for: surprising integer formulas / trig graphs and wiggles / compound temperature formula / we answer the tossup q and e / advanced topic = infinite series / an actual imaginary math joke /

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math at the podcast expo ?

Sat, 31 Mar 2007 16:57:00 +0000

yes, it's true - i'm going to be presenting at this fall's podcast and portable media expo, on iLearnRadio's educational panel. that's great exposure for our program of choice, dansmathcast! i'll speak about aspects of technology (blogging and podcasting) and how they can benefit teachers, students, and other learners.


Sun, 18 Mar 2007 03:35:00 +0000

dansmathcast #28 / perfect number... perfect show ? / this time we look at the numerics of paper, vectors & trig graphs / high praise for dansmathcast / some nba math / the geometry of linear transformations / and st. patty serves up a fan's math joke!

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march into spring (and vice versa)

Mon, 05 Mar 2007 19:30:00 +0000

woodhead says: go to and check out dan's new problem of the week, about five runners going ten miles / have you seen dansmathflix #1, woodhead and safir? if not, you're left right out! / another podcast is on the way, with more mathematical things to say!


Wed, 21 Feb 2007 00:55:00 +0000

dansmathcast #27 / celebrating 27 years of the 3x3x3 rubik's cube / we look at four physics formulas, circular trig functions, e-mail, math on a sports podcast, real manifolds, patty's study secret, and two geometric limericks / listen to all my previous shows; you'll get smarter a half hour at a time!

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iTunesU at my college(s)!

Fri, 09 Feb 2007 17:09:00 +0000

it's coming soon at DVC (where i teach), but uc berkeley (my "old school") has a page now on iTunes U / i gave a presentation this week at LMC (another college in our district), plugging dansmathcast mercilessly as they prepare to get on the iTunes U bandwagon / thanks for supporting my show! (be sure to digg me at


Mon, 29 Jan 2007 21:09:00 +0000

dansmathcast 26 / the 'math podcasting 101' show / we: look at the mathematics of tournaments / begin our trig studies / iron out our e-mail bag / and use linear programming! / can dan speak more slowly? / and if you thought math joke #25 was bad...

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phoneless iphone by vday ?

Fri, 19 Jan 2007 17:58:00 +0000

here i am at macworld with podcasting guru leo laporte, one of my idols and host of many tech 'netcasts' / he says there may be a wide ipod (like iphone minus the phone) by valentine's day / i was skeptical, so i immediately bought a current video ipod / now i can watch 'dansmathflix' anywhere, anytime! / if you love me you'll vote for my show at podcastalley ;-}


Tue, 09 Jan 2007 01:25:00 +0000

dansmathcast #25 : happy new year, now to macworld, then back to school / this time we take a close look at "e" / apply log and exponent equations / crack a secret code / math time on freaky friday / the 'string out' problem / my usual joke of a joke / new 'e' page soon on / %;-}

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happy holidaze from dansmath!

Thu, 28 Dec 2006 18:33:00 +0000

here's to you (the time magazine person of the year!) / dan will be bach after the new year but before the macworld expo in SF / show #25 will be packed with math goodies / please send in your comments, questions, and better math jokes ( / how do you like my embellished icosahedron?


Wed, 20 Dec 2006 00:24:00 +0000

dansmathcast #24 : beginning my second year! / we look at consumer computer math, exponential and log functions, another type of secret code / a 'systematic' answer to an e-mail / the solution of the 'can' problem / this math joke is a joke / visit / vote for our show at podcastalley

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the dan vinci code

Wed, 13 Dec 2006 17:13:00 +0000

on my upcoming show #24, learn about the math behind some secret ciphers such as in the da vinci code, and in public key cryptography / listen to (one-year anniversary) show #23 for the basics of encoding and decoding / check out my holiday 'presence' at YouTube and MySpace, my member name is "dansmath"


Thu, 30 Nov 2006 04:23:00 +0000

dansmathcast #23 - One Full Year! / we explore radical equations, secret codes, read some e-mail, explode another math myth, and use calculus to find max or min / two other math websites (besides, and a math joke round out the show!

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soon to be... show twenty-three!

Tue, 28 Nov 2006 00:47:00 +0000

i am working on my next podcast / and will be speaking at a math teachers conference this week / showing some of my mathematica graphics and animations and plugging my podcast / my new problem-of-the-week #256 is up now on / i dare you to try it-- no charge! % ;-}


Wed, 15 Nov 2006 09:50:00 +0000

dansmathcast #22 / it's for you / this time we... discuss voting systems, start a new algebra book, look at functions, bask in the fan mail, and meet more quadratic numbers with weird properties / math joke is a calculus limerick / download all the old shows and learn a lot!

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other voting methods

Mon, 13 Nov 2006 00:21:00 +0000

with the midterm elections (and midterm exams) behind us, we might start looking at other voting systems, besides the simple "plurality" / there are "instant runoff" and other surprising methods used in other parts of the world / we'll look into these on upcoming podcast #22


Wed, 01 Nov 2006 02:27:00 +0000

dansmathcast #21 - it's not a show about blackjack (or jack black) / this time it's medical math / dansquotes from podango / the unfinished chapter on quadratics / algebraic number fields of degree 2 / show 19 parabola found / mediccast promo

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running, then podcasting...

Mon, 30 Oct 2006 00:52:00 +0000

hello runners and math nerds - are we a small or large intersection on the big venn diagram of life? / i just finished the silicon valley half marathon in record time - my slowest ever! / now working on show #21 - it will be out by halloween with more good math stuff for you!

is math class a joke?

Mon, 23 Oct 2006 02:50:00 +0000

your math class should make sense, but it shouldn't be so easy it's a joke / challenge yourself with some of the harder homework problems, even ones that aren't assigned / if you need a break from studying, listen to the math joke at the end of each of my podcasts!


Sat, 14 Oct 2006 01:20:00 +0000

dansmathcast #20 - a show for you - math geek or math challenged. this time we look at geometry, logarithms, the math movie "proof," and induct sophie germain into the hall of fame. and 2 all u dansmathfans: thanks for the downloads, now vote for me at iTunes and PodcastAlley!

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bach from podcast expo!

Fri, 06 Oct 2006 14:19:00 +0000

here i am at the podcast expo in southern calif - in the libsyn car! i met lots of famous podcasters and bloggers, and got some exposure for dansmathcast / especially nice was talking to leo laporte, adam christianson of the maccast, 'shooby' kumar, and john 'oneminutetip' chambers, voices i knew well from their shows!


Tue, 26 Sep 2006 21:35:00 +0000

dansmathcast #19 / it's all about the love (for math) / visiting higher dimensions / quadratic equations / fan mail from Po / reflecting on parabolas and hyperbolas / a really bad math joke!

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thanks for watching my flix !

Tue, 19 Sep 2006 18:26:00 +0000

lots of you have been downloading dansmathflix #2 (even though it weighs in at over 90 MB); i'm very happy about that! i'll produce more animations and things this fall... i'm now working on podcast 19; you can leave a comment in iTunes! keep sending questions, i read some on my show!


Wed, 06 Sep 2006 03:31:00 +0000

dansmathcast #18 - hot on the heels of the release of my blockbuster film - this episode looks at color numbers and systems, square root expressions, the great Ramanujan joins dan's math hall of fame, learn some reflection properties of circles and ellipses, and try a new type of math joke!

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dansmathflix #2 - ways of seeing numbers

Thu, 31 Aug 2006 02:08:00 +0000

here is dan's latest math film, "ways of seeing numbers" / from roman numerals to time codes, color hues, rgb numbers, coordinate systems, animations, and more / dan shows that it's all based on numbers!

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bach to school !

Tue, 22 Aug 2006 17:39:00 +0000

it's that time of the year again - students are buying books (such as the bach & leitner classic shown in the picture) and going online (for example, just to learn the world's most important subject: math! (is there anything of mine i haven't plugged?) so keep listening to my podcast, and watch for dansmathflix #2 soon.


Fri, 11 Aug 2006 21:17:00 +0000

dansmathcast #17 (the world's most random number) / this time: rational expressions and equations (part 2), ways of seeing numbers, dan's e-mail questions, another 'math in the movies', equations of parabolas and hyperbolas, and trig riddles / andre agassi and tiger woods academies / my site is / dansmathcast is now a member of MERLOT, a multimedia education resource!

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is math a language ?

Mon, 07 Aug 2006 04:06:00 +0000

thank you for subscribing, voting, commenting, and of course listening / what an honor to find dansmathcast listed in the top 20 on podcast alley / many people say math is like a foreign language, and that's partly true / i am completing work on dansmathflix #2, "ways of seeing numbers" / it should be out in a couple or three weeks, after episode #17 / check for new links and directories listing dansmathcast soon!


Thu, 27 Jul 2006 00:51:00 +0000

dansmathcast 4 squared 4 U / this time we talk about: factoring polynomials, finding conic sections, getting their equations / we read dan's e-mail questions / also a look at math in the movies / yet another lame math joke for the nerds / view my website at or my blog at / dansmathcast now on the "heavy rotation" at / listen in!

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dansmathcast joins iLearn radio!

Sat, 22 Jul 2006 01:29:00 +0000

dansmathcast has been persuaded by iLearn Radio Network to join its lineup of scheduled educational podcasts! / you can now hear my show as it might sound on a radio playlist / go to and check their "playing today" list. please e-mail me at if you try listening using their java player; let me know how you like the experience / and thanks iLearn and BX Radio Network (makers of CoolCast radio as well) !


Tue, 11 Jul 2006 21:43:00 +0000

dansmathcast / 15 shows in 7.5 months; that's, uh, lots / this episode contains segments about: exponent laws and polynomials, other podcasts i listen to, the idea of proof, reader e-mail, and permutations / math joke as usual to make you groan / listen, you'll be smarter in a half hour!

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running into math problems?

Fri, 07 Jul 2006 20:54:00 +0000

hey there dansmathheads / this is me running in the 2005 san francisco marathon / i ran for me and to benefit the National AIDS Foundation / i was slow but determined in that race / just like many math students; success takes perseverance / another chapter done in a series of math courses is like one more mile down in a marathon !


Tue, 27 Jun 2006 01:24:00 +0000

dansmathcast is back / after a two-week break in maui / dan returns to talk about systems of equations, the state of math education, reader e-mail, the math hall of fame, and gaussian primes / you'll be smarter in a half hour!

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dan surfing the internet

Sat, 10 Jun 2006 18:45:00 +0000

to my loyal and/or casual listeners / thanks for your continued support / as you can see, i'm busy at the moment; i'll be recording my next podcast shortly / am i working hard, or hardly working? / meanwhile try my problem of the week, browse my problem archives, and download all my old podcasts!


Mon, 29 May 2006 01:07:00 +0000

dansmathcast #13 / it's your lucky day / the baker's-dozenth show covers graphing lines, a listener e-mail about irrationality, answers to previous show questions, best-fitting lines and curves, and student-sent math jokes! / celebrate my six months of podcasting by visiting for all your math nerds' needs!

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make the impossible happen !

Fri, 26 May 2006 18:36:00 +0000

whatever you do, you can do it better if you know some math. some of my students have said they thought it was impossible that they would ever pass, not to mention enjoy, a math class! this picture may look like an impossible object, but if you're looking at it, how impossible can it be? (podcast 13 on the way)


Sun, 14 May 2006 01:46:00 +0000

dansmathcast #12 / who "dozen" like math? / apparently there are strong feelings on both sides / dansmathcast is a show for math nerds, math phobics, and everyone in between / this show looks at rational algebra, trig basics, e-mail questions, linear algebra, and which primes are sums of two squares / visit for contest problems and much more!

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segment logos for dansmathcast

Tue, 09 May 2006 15:58:00 +0000

"know your podcaster" / one of the regular features on my math podcast / others are "chapter of the week" although the show comes out twice a month) / mathematics for the masses / advanced math topic of the week / viewer mail (ok, reader & listener mail) / speaking of knowing me, have you listened to podcasts # 1 - 11 yet? / #12 is on the way, with pythagorean theorem at the kentucky derby!


Sat, 29 Apr 2006 03:06:00 +0000

dansmathcast - on the air since 2005 - a math show for math nerds, math phobics, and everyone in between. show #11 covers equations, topology, moebius strips, math hall of fame, metric spaces and a math joke. listen to dansmathcast with pencil and paper for maximum benefit!

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do you see the pictures?

Sun, 23 Apr 2006 19:17:00 +0000

hello pod people / i googled my podcast and realized that dansmathcast is listed on many blogs / not all of them display the pictures that i post / this one is a painful-looking moebius bracelet that i drew in mathematica / if you can't see the picture go to my blog at


Wed, 12 Apr 2006 00:25:00 +0000

dansmathcast reaches thousands -- i am proud to bring you show #10. this time we talk about set theory, geometry, and complex numbers, with a bonus TV sitcom math sound clip. get the answers to last show's challenge and homework problems, hear one of dan's lame math jokes. we guarantee a smarter you in 30 days!

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dan's decimal movement...

Sat, 08 Apr 2006 00:39:00 +0000

this eatery proudly displays its decimal illiteracy / can they really make money selling a bag of chips for less than a penny? / as i explained in podcast #2, many people misunderstand and misuse decimals and percentages / if you spot a bad sign, take a picture and send it to me at / thanks for your votes at podcast alley / dansmathcast has been in their top 25 education list since late march / vote for me there each and every month %;-}


Tue, 28 Mar 2006 22:11:00 +0000

dansmathcast - ya gotta love it ! show #9 explains coordinates and graphs, statistics, polyhedra, math in the media, and more. visit for math lessons, an ongoing problem contest, and lots more.

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dansmath rolls on !

Thu, 23 Mar 2006 15:38:00 +0000

dansmathcast has just crossed over the one billion download milestone! / oh, wait, maybe that was iTunes song downloads / the picture at right is part of the "nested circle world" / the great descartes had a formula back in 1637 for the curvatures of four "kissing circles" / i used it and mathematica to draw hundreds of circles; only a few are shown here / you can learn and see more at my popular website,


Sat, 11 Mar 2006 19:30:00 +0000

dansmathcast - the title says it all! show #8 explains mixture, percent, and distance-rate-time problems, tessellations, who's looking at dan, and derivatives in calculus. stop by for math lessons, feature pages, a problem-of-the-week contest, and plenty more...

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dansmathflix #1 - woodhead & safir

Mon, 06 Mar 2006 17:30:00 +0000

dansmathflix #1 / a video podcast ! / by popular demand, and because i wanted to, our heroes woodhead and safir (voiced by dan and patty) go on their first math adventure ! / "dansmathflix" will share the dansmathcast feed, with animations or short videos illustrating math topics / watch 'em on computer, iPod video, or other gizmo (.mov format for max compatibility)

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Sun, 26 Feb 2006 22:36:00 +0000

dansmathcast - a math variety show, is produced twice a month. show #7 addresses equations, word problems, math in the movies, and basics of calculus. visit for free lessons, feature pages, a problem-of-the-week contest, and other math stuff !

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how to do word problems !

Sat, 25 Feb 2006 03:21:00 +0000

hi dansmathfans - podcast #7 is in the works! this time it's the burning question my students always ask - "how do we do word problems?" - which comes after the question, "what are we gonna use all this math for?" - also coming up this weekend: the basics of calculus - so check back in a couple of days!


Sat, 11 Feb 2006 04:00:00 +0000

dansmathcast, a math variety show, appears here twice a month. show #6 looks at polynomials, fibonacci numbers, math hall-of-fame, and approximation techniques. go to for details, free lessons, feature pages, problem-of-the-week contest, and more!

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do you want math videos?

Sun, 05 Feb 2006 01:17:00 +0000

hello dansmath-heads, thanks for your support. i have a cartoon, woodhead and safir, and several mathematica animations done and in the works. do you want to see them, and is it ok to mix videos into this same feed? speak your piece at, and feel free to vote for dansmathcast at too! (icosahedron drawn with mathematica)


Fri, 27 Jan 2006 03:53:00 +0000

dansmathcast is a twice-a-month variety show about mathematics. show #5 dives into variables and expressions, gcd and lcm, math hall-of-fame, and basic group theory. check out for podcast details, free lessons, feature pages, problem contests, and more!

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back to school!

Mon, 23 Jan 2006 19:12:00 +0000

by now all you students and teachers are into your spring semester or winter quarter; work hard, do your math! / i have some animations and movies i was going to post here, but judging from comments at inside mac radio, people don't like mixing videos and audios in the same feed; they can't watch videos on most players / but if you would like to get my movies i will be posting some on my website starting in february / go to / vote for dansmathcast at / thanks dansmathfans!


Wed, 11 Jan 2006 03:51:00 +0000

dansmathcast is a curiously popular variety show about the subject of mathematics. show #4 covers exponents, strange rounding (proving 2+2=5), macworld expo, and functions. check out for podcast details, feature pages, math lessons, contest problems, lame jokes, and other math stuff!

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happy new year 2006 !

Sun, 01 Jan 2006 20:49:00 +0000

wow, is it 2006 already?! / thanks again for all your downloads and subscriptions; i'm now listed on iTunes. odeo,,, yahoo podcasts, podcast alley, and more! (if you love dansmathcast, you can vote for me at / the picture at the right is Woodhead, a 3D character i've been animating over the last few years / look for a video podcast starring "Woodhead and Safir" soon!


Tue, 27 Dec 2005 01:45:00 +0000

dansmathcast is a popular, twice-monthly variety show about the subject of mathematics. show #3 covers fractions, order of operations, "what's math good for", and the mathematics of sound. check out for podcast details, feature pages, free lessons, problem archives, and other stuff!

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dansmathcast makes iTunes Top 100

Thu, 22 Dec 2005 22:17:00 +0000

wow / my humble podcast just made the iTunes Top 100 Education podcasts list! / sure it's only #95 now, but tell your friends, relatives and students to download it and subscribe, and we'll spread dansmath world wide! / I will soon be including some show notes, look for the mathcast logo items to grow a bit, and go to my website for updates, downloads, and math all around you! / check out my two shows, and expect a third show on December 25 or 26 / keep sending in comments!


Sun, 11 Dec 2005 03:50:00 +0000

dansmathcast is a twice-monthly variety show about the vast subject of mathematics. show #2 covers positive and negative integers, prime numbers, misuses of decimals and percentages, and more. check out for podcast details, free lessons, problem contests, and other great stuff!

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thanks for listening!

Sun, 04 Dec 2005 22:12:00 +0000

my math podcast, dansmathcast, has been popular! many downloads and iTunes subscriptions, some from iPodder! you should check out my podcast by going to iTunes music store > podcasts > browse > education > dansmathcast, then subscribe! i'll be doing two shows each month, show 2 will be dec. 10, 2005. - dan the math man (saddle track drawn with mathematica)


Sun, 27 Nov 2005 10:25:00 +0000

dansmathcast is a math variety show about the vast subject of mathematics. dan will podcast twice a month with feature stories, challenge problems, and clear explanations of the beautiful world of math. check out for podcast details, free lessons, problem contests, and other goodies!

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