tag:blogger.com,1999:blog-10220498.post500931789751952876..comments2024-03-21T15:59:25.263-05:00Comments on Math Teacher Mambo: Algebra/Basics Review in GeometryShireen Dadmehrhttp://www.blogger.com/profile/16282965851939089408noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-10220498.post-9206401050369635972011-03-19T17:59:15.235-05:002011-03-19T17:59:15.235-05:00This is one of the first things I go over in my ha...This is one of the first things I go over in my hands-on measurement unit -- the fact that decimals can only be used to represent base-10 systems! 4ft5in does NOT equal 4.5ft, and for the same reasons 2hours and 15 minutes does NOT equal 2.15hours! It's a good thing to discuss in 9th-grade before their misconceptions built further. (And they'll need to do a lot of conversions in high school science classes.)<br /><br />But yes, it drives me nuts!! I was happy to see that on the tests I gave at the end of the unit, most kids were able to do proper math to tell me that 13.2 hours was shorter than 13 hours and 15 minutes.untilnextstophttps://www.blogger.com/profile/15285583728476473117noreply@blogger.comtag:blogger.com,1999:blog-10220498.post-47677267896992510822011-03-03T20:43:00.845-06:002011-03-03T20:43:00.845-06:00Hah! The funny thing is that JUST today, a homewor...Hah! The funny thing is that JUST today, a homework answer was "3/2", and I was stopped short when a kid asked, "is 1.5 okay?"Shireen Dadmehrhttps://www.blogger.com/profile/16282965851939089408noreply@blogger.comtag:blogger.com,1999:blog-10220498.post-62996600366177030632011-03-03T12:10:00.833-06:002011-03-03T12:10:00.833-06:00Ooo! I was just thinking I should make a list of c...Ooo! I was just thinking I should make a list of common errors students make in HS math. This is a gold mine for me!LSquared32https://www.blogger.com/profile/00858524638866166691noreply@blogger.comtag:blogger.com,1999:blog-10220498.post-19981891031135079082011-03-03T10:21:46.649-06:002011-03-03T10:21:46.649-06:00I have been having the same thoughts lately, and w...I have been having the same thoughts lately, and was thinking about writing a blog post...when I found time!<br />The rounding KILLS ME!!!! Did you know that if you round 4.6666666667 to the nearest tenth you get 4.6? <br /><br />I have been trying to emphasize keeping the integrity of an answer. We have been working with trig functions. LOVE it when they find the tan(59) = 1.663 and they round to 2 mid way through a problem! which then makes their final answer off by a foot or so and they say "What's the big deal 31 and 32 feet are basically the same thing?" My eyes usually bug out of my head!ERhttps://www.blogger.com/profile/03124846987033083264noreply@blogger.com