tag:blogger.com,1999:blog-838385504647187826.post5075652327751043408..comments2022-03-24T05:25:48.481-04:00Comments on Too Teeter and Too Totter: The Ah HaHeidi Fessendenhttp://www.blogger.com/profile/14231730070389379181noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-838385504647187826.post-14429322046434280282013-01-07T04:51:36.518-05:002013-01-07T04:51:36.518-05:00This comment has been removed by a blog administrator.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-838385504647187826.post-76961509183509717532010-02-25T12:28:15.146-05:002010-02-25T12:28:15.146-05:00I think it's good for kids to have many differ...I think it's good for kids to have many different mental models of each concept. So they need to do the plus-tens and minus-tens with hundreds charts, then number lines, then manipulatives. (Not necessarily in that order.) So 2 different hundreds chart is probably a great idea. The more ways they see it, the more deeply and flexibly they understand it.Heidi Fessendenhttps://www.blogger.com/profile/14231730070389379181noreply@blogger.comtag:blogger.com,1999:blog-838385504647187826.post-53387486791651322562010-02-24T22:15:20.317-05:002010-02-24T22:15:20.317-05:00The new school I'm working at uses Think Math,...The new school I'm working at uses Think Math, which uses an upside-down hundreds chart -- 100 is at the top. They say that way it's like the floors of a building, starting at the bottom number and climbing. Thoughts?Heathenhttps://www.blogger.com/profile/14000772823670277674noreply@blogger.com