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Re: What the heck happened to Trigonometry in the Common Core??!!
Posted:
Apr 17, 2013 9:04 PM



Wow. Just wow. Are fifth graders really sophisticated enough to draw a nonobvious extra line in the diagram to split the shaded area into just the two triangles that can be solved for their areas? Are they even sophisticated enough to recognize an altitude when it appears outside the triangle?
I teach geometry to tenth graders. I just have to shoehorn this problem into my already overfull curriculum somewhere and see how they do...
Evelyne Stalzer
On Wed, Apr 17, 2013 at 3:55 PM, CCSSI Math <ccssimath@gmail.com> wrote:
> We haven't gotten to trig yet, but we will. > > In the meantime, a proposed fifth grade geometry problem from our blog > caused quite a ruckus on Reddit, with people trying all kinds of methods, > including trigbased approaches. > > > http://www.reddit.com/r/math/comments/1c46c7/does_this_quadrilateral_area_problem_really/ > ******************************************************************* > * To unsubscribe from this mailing list, email the message > * "unsubscribe nyshsmath" to majordomo@mathforum.org > * > * Read prior posts and download attachments from the web archives at > * http://mathforum.org/kb/forum.jspa?forumID=671 > ******************************************************************* >



