tag:blogger.com,1999:blog-6651514617266100245.post7503181746188048159..comments2024-01-03T04:58:04.221-05:00Comments on I Hope This Old Train Breaks Down...: Estimation of Circular AreasUnknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6651514617266100245.post-14119683558775887892012-06-03T17:51:43.213-04:002012-06-03T17:51:43.213-04:00Oh, I just did "Friday Bubbles" with my ...Oh, I just did "Friday Bubbles" with my 6th graders. (http://fawnnguyen.com/2012/06/01/20120601.aspx) Your area estimation is next, then Sue's reminder of the rectangle model, and then the chain video. Yeah for ideas!Fawn Nguyenhttp://fawnnguyen.comnoreply@blogger.comtag:blogger.com,1999:blog-6651514617266100245.post-50957122983119977462012-06-02T19:06:06.945-04:002012-06-02T19:06:06.945-04:00I had never seen the area of the triangle used to ...I had never seen the area of the triangle used to derive the formula for the area of the circle. Very interesting. My 7th grade students really enjoyed this video using the area of a rectangle like Sue mentions above. http://www.youtube.co/watch?v=YokKp3pwVFc.Sara Daltonhttps://www.blogger.com/profile/13094001489304937386noreply@blogger.comtag:blogger.com,1999:blog-6651514617266100245.post-16606935600431490362012-05-31T23:56:08.904-04:002012-05-31T23:56:08.904-04:00Like this! http://www.youtube.com/watch?v=whYqhpc6...Like this! http://www.youtube.com/watch?v=whYqhpc6S6g This was the video my Grade 8 student showed me today.untilnextstophttps://www.blogger.com/profile/15285583728476473117noreply@blogger.comtag:blogger.com,1999:blog-6651514617266100245.post-10423435382784849562012-05-31T23:48:12.749-04:002012-05-31T23:48:12.749-04:00Hey Sue,
Thanks for the reminder! I've seen a...Hey Sue,<br /><br />Thanks for the reminder! I've seen a thing or two, but today my Grade 8 student was showing me something else related to this. I'll have to properly research some options for where to go next with this.untilnextstophttps://www.blogger.com/profile/15285583728476473117noreply@blogger.comtag:blogger.com,1999:blog-6651514617266100245.post-11632900805016707892012-05-31T12:05:00.151-04:002012-05-31T12:05:00.151-04:00Fabulous way to start!
I'm guessing you alre...Fabulous way to start! <br /><br />I'm guessing you already know this, but there are ways to get them to 'see' the formula, now that they've gotten grounded in estimation. If you make oh, maybe 16 slices, and lay them out one up, one down, etc, you'll get a sort of rectangular shape with a height about equal to r and a length about equal to half the circumference.Sue VanHattumhttps://www.blogger.com/profile/10237941346154683902noreply@blogger.com