tag:blogger.com,1999:blog-4784716814797278012.post2891407525561327139..comments2024-01-15T19:46:32.413-05:00Comments on MATHEMATICAL MUSINGS by mathteacher24: Teaching Trig Ratios in GeometryS. Leigh Natarohttp://www.blogger.com/profile/15251403316819915055noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4784716814797278012.post-23237385231143336242014-02-10T23:00:59.375-05:002014-02-10T23:00:59.375-05:00Thanks for the comments. If we have our 9th snow ...Thanks for the comments. If we have our 9th snow day this year on Thursday, I'll look at your work then. Yes - 8 snow days so far. Crazy!S. Leigh Natarohttps://www.blogger.com/profile/15251403316819915055noreply@blogger.comtag:blogger.com,1999:blog-4784716814797278012.post-21593447487207070352014-02-10T18:27:42.952-05:002014-02-10T18:27:42.952-05:00This blog post & Tina C's applet (linked a...This blog post & Tina C's applet (linked above) motivated me to create a Geogebra lesson exploring trigonometry. Thanks for the idea of using Geogebra for this purpose!<br />Here is the worksheet:<br />http://crazymathteacherlady.wordpress.com/2014/02/10/day-100-discovering-trigonometry/Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4784716814797278012.post-65781475430873970202014-01-20T15:41:04.124-05:002014-01-20T15:41:04.124-05:00As I read this post I thought, "Wow, this is ...As I read this post I thought, "Wow, this is exactly the process I went through!" I made an applet for Geogebra that kids can use and a worksheet to go with it: http://drawingonmath.blogspot.com/2012/06/trig-intro-applet.htmlTina Cardonehttps://www.blogger.com/profile/00549943329133396794noreply@blogger.comtag:blogger.com,1999:blog-4784716814797278012.post-22256436404210438892014-01-17T23:45:15.834-05:002014-01-17T23:45:15.834-05:00Nice! I like Geogebra, but I do the activity with ...Nice! I like Geogebra, but I do the activity with each row or group being assigned a different angle. We then generate a trig table for the angles (usually multiples of 10). In this way each row can see that their triangles are different (I am fine with the error of the 25c rulers) and now we have some other interesting patterns--the "1st and 2nd columns" are reversed and with nudging from me they see the third column is the quotient of the first 2. <br /><br />I actually like that the answers are close.<br /><br />Now I introduce the formal terminology and ask them to use the sin, cos, and tan buttons to see which column appears to related to which buttons.<br /><br />I like the incorporation of Geogebra here as well. With better access to computers next year, I hope to make Geogebra a regular part of the learning process.<br /><br />MrChttps://www.blogger.com/profile/15834292039619837268noreply@blogger.com