Pachabels Canon in D upside down in reverse direction bpolster 2010-06-04 | This is what a music roll of the canon in D sounds when you play ii upside down and in reverse direction. We also played this roll the right side up, upside down, the right side up in reverse direction (see my channel). At this year's Gathering for Gardner, Vi Hart presented a couple of similar experiments. The two that I liked best were Canon in D played on four music boxes (http://www.youtube.com/watch?v=3a9wWRxYSko) and a music box playing a piece recorded on a paper strip that was twisted into a Mobius band (http://www.youtube.com/watch?v=3iMI_uOM_fY).
mathematical magic trick 3 bpolster 2010-06-04 | Lately we've been discussing mathematical card tricks as part of the maths circle at the John Monash Science School here in Melbourne. I usually demonstrate a trick and then ask the students to figure out how it works. In the first instance these videos are meant for the students who attend these meetings. If you are interested in mathematical card tricks I recommend the MAA column www.maa.org/columns/colm/cardcolm.html
Pachabels Canon in D bpolster 2010-06-03 | This is a music roll of the canon in D played on our player piano. We also played this roll upside down, the right side up in reverse direction, and upside down and in reverse direction (see my channel). At this year's Gathering for Gardner, Vi Hart presented a couple of similar experiments. The two that I liked best were Canon in D played on four music boxes (http://www.youtube.com/watch?v=3a9wWRxYSko) and a music box playing a piece recorded on a paper strip that was twisted into a Mobius band (http://www.youtube.com/watch?v=3iMI_uOM_fY).
Pachabels Canon in D upside down bpolster 2010-06-03 | This is what a music roll of the canon in D sounds when you play it upside down. We also played this roll the right side up, the right side up in reverse direction, and upside down and in reverse direction (see my channel). At this year's Gathering for Gardner, Vi Hart presented a couple of similar experiments. The two that I liked best were Canon in D played on four music boxes (http://www.youtube.com/watch?v=3a9wWRxYSko) and a music box playing a piece recorded on a paper strip that was twisted into a Mobius band (http://www.youtube.com/watch?v=3iMI_uOM_fY).
juggling the changes bpolster 2010-06-03 | To really be able to appreciate what this video is all about you need to know what it means to Ring the Changes. What I am doing here is to juggle a full extent on four bells in the following sense: the different bells are associated with the different bells and whenever a bell rings I toss its associated ball in the air. Just in case you are wondering, the extent in question is not Plain Bob. I made up this video as a fun ending to the following article on the math of ringing the changes http://plus.maths.org/issue53/features/polsteross/index.html
mathematical magic trick 2 (kruskal card trick with dice) bpolster 2010-06-03 | Lately we've been discussing mathematical magic tricks as part of the maths circle at the John Monash Science School here in Melbourne. I usually demonstrate a trick and then ask the students to figure out how it works. In the first instance these videos are meant for the students who attend these meetings. Here is the trick in its original card setting http://www.youtube.com/watch?v=kvvq0ERlixU&feature=related
mathematical magic trick 1 bpolster 2010-06-03 | Lately we've been discussing mathematical card tricks as part of the maths circle at the John Monash Science School here in Melbourne. I usually demonstrate a trick and then ask the students to figure out how it works. In the first instance these videos are meant for the students who attend these meetings. If you are interested in mathematical card tricks I recommend the MAA column www.maa.org/columns/colm/cardcolm.html
Playing the knotted didgeridoo bpolster 2010-04-10 | In this video I invite you to compare the sound of a proper didgeridoo made from wood and that of a knotted didgeridoo made from twelve PVC drainage pipe pieces. This video is part of a gift exchange that I prepared for this year's Gathering for Gardner (http://g4g4.com)
