tag:blogger.com,1999:blog-10220498.post104193514283230905..comments2024-03-21T15:59:25.263-05:00Comments on Math Teacher Mambo: Center of Mass FunShireen Dadmehrhttp://www.blogger.com/profile/16282965851939089408noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-10220498.post-41539326679392330302011-07-24T01:24:31.515-05:002011-07-24T01:24:31.515-05:00Continent of the Ninth-RMT-C9-RMT通貨販売最安値の専門サイト【RMT...Continent of the Ninth-RMT-C9-RMT通貨販売最安値の専門サイト【RMTGAMEBOY】<br />平素より皆さんのご愛顧を賜り、本当にありがとうございます<br />【RMTGAMEBOY】のスタッフでございます<br />本店のContinent of the Ninth-RMT-C9-RMTの通貨販売の取り扱いを開始いたしました<br />Continent of the Ninth-RMT-C9-RMT販売ページ:<br />http://www.rmt-gameboy.jp/gamelist-238.html<br />【RMTGAMEBOY】はおもにContinent of the Ninth-RMT-C9-RMTの通貨販売・買収、アイテム販売、育成代行などのサービスを経営しておるRMT専門サイトでございます。<br />できるだけオンラインゲームContinent of the Ninth-RMT-C9-RMTの通貨の価格を安くして、皆さんのためにRMT業界の最安値を提供します。<br />http://www.rmt-gameboy.jp/gamelist-238.html<br />法人運営・安心・快速の【RMTGAMEBOY】へようこそ<br />★★★★★★★★★★★★★★★★★★★★★★★★★★★★<br />【RMTGAMEBOY】営業情報:<br />オンラインサポート対応時間:9:00~24:00(年中無休)<br />ホームページ:http://www.rmt-gameboy.jp<br />メールアドレス商談:info@rmt-gameboy.jp<br />MSNメッセンジャー:rmt-gameboy@hotmail.co.jp<br />★★★★★★★★★★★★★★★★★★★★★★★★★★★★rmtgameboynoreply@blogger.comtag:blogger.com,1999:blog-10220498.post-35000882429654004202011-07-06T01:56:35.574-05:002011-07-06T01:56:35.574-05:00This comment has been removed by a blog administrator.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-10220498.post-68801371421484252122010-06-30T11:36:15.790-05:002010-06-30T11:36:15.790-05:00love it! When I taught triangle concurrency this y...love it! When I taught triangle concurrency this year, I used an activity where the kids would cut out a triangle (any triangle) out of a piece of cardboard, and then they find the centroid, and we have a competition to see who could balance their triangles (without cheating) at the centroid, on a sharpened pencil! It only works if they were extremely precise with their measurements / drawing of the medians. Randomly during class, I was able to balance mine on a pencil tip while walking around for 15 seconds! The kids were SUPER EXCITED. hahauntilnextstophttps://www.blogger.com/profile/15285583728476473117noreply@blogger.comtag:blogger.com,1999:blog-10220498.post-64421271100179814512009-06-09T08:24:32.234-05:002009-06-09T08:24:32.234-05:00Well, we got the 4th ruler past the table, and it ...Well, we got the 4th ruler past the table, and it WAS counter intuitive. I guess I could ask that question BEFORE they started experimenting:<br /><br />Do you think we could balance a ruler this way and it's completely off the table?<br /><br />How many rulers do you think it would take?<br /><br />Ms. CookieAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-10220498.post-67203868999742470472009-06-08T23:55:51.848-05:002009-06-08T23:55:51.848-05:00That also means that at some point the ruler on to...That also means that at some point the ruler on top will be completely past the table. Another problem could be what's the minimum number of rulers needed to get the top one totally past the table?Unknownhttps://www.blogger.com/profile/00258412761688977066noreply@blogger.comtag:blogger.com,1999:blog-10220498.post-2522891638503204042009-06-08T21:51:52.435-05:002009-06-08T21:51:52.435-05:00Sam-
Now you have me itching to get some books to ...Sam-<br />Now you have me itching to get some books to try it myself just to be contrary.<br /><br />Alex-<br />Ooh, that series would be a great addition to the lesson. Thanks for the idea.<br /><br />Ms. CookieAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-10220498.post-77705052188132991802009-06-08T17:01:27.529-05:002009-06-08T17:01:27.529-05:00Theoretically (certainly not in practice), you cou...Theoretically (certainly not in practice), you could stretch them out forever like this. If you make a sequence for the distance n rulers can stick out from the table, then<br /><br />d(n rulers) = d(n-1 rulers) + 6/n<br /><br />So the sum to infinity is<br />6/1 + 6/2 + 6/3 + 6/4 + .........<br /><br />As all maths teachers know, that's a divergent series - albeit only just. It might be interesting to see how quickly the class can figure that out...Alexhttps://www.blogger.com/profile/12912173255354626589noreply@blogger.comtag:blogger.com,1999:blog-10220498.post-44976369125094403052009-06-07T21:55:25.035-05:002009-06-07T21:55:25.035-05:00COOL!
We had an extra few minutes after a review ...COOL!<br /><br />We had an extra few minutes after a review day with my calc class, and there were like a million physics textbooks, so we tried to stack them like your rulers. <br /><br />http://www.prairienet.org/~pops/BookStacking.html<br /><br />It didn't work so well, so I'm glad to know it works with rulers! We have a TON of those in the department.sam shahhttp://samjshah.wordpress.comnoreply@blogger.com