tag:blogger.com,1999:blog-5134418801703349975.post8341601977095694048..comments2023-05-12T11:17:29.120-04:00Comments on Math Arguments: 15: Error Analysis - Can You Be A Teacher, Too?Curmudgeonhttp://www.blogger.com/profile/04323026187622872114noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5134418801703349975.post-72297492499770677022014-02-03T18:17:33.238-05:002014-02-03T18:17:33.238-05:00A slight variation on possible thinking compared t...A slight variation on possible thinking compared to Jason's. (They are equivalent but a 4th grader wouldn't necessarily know that)<br /><br />Multiply 9*5 then carry the 4. Multiply the 4 by 5 and the 4 you carried by 5 then add them together.Mr B.noreply@blogger.comtag:blogger.com,1999:blog-5134418801703349975.post-80984870560190289032014-02-02T22:53:08.039-05:002014-02-02T22:53:08.039-05:00I've taught 4th and 5th a long time. I saw th...I've taught 4th and 5th a long time. I saw the error pattern in all three right away. That's what happens when you teach procedures.Ricky Mhttps://www.blogger.com/profile/07681775957782185484noreply@blogger.comtag:blogger.com,1999:blog-5134418801703349975.post-44670092085452005472014-02-01T15:00:10.503-05:002014-02-01T15:00:10.503-05:00For (a), multiply 9 x 5. Write down 5, then carry ...For (a), multiply 9 x 5. Write down 5, then carry the 4. *Add the 4 you carried to the top 4* to get 8, then multiply by 5 to get 40.<br /><br />Multiply 9 x 2. Write down 8, then carry the 1. *Add the 1 you carried to the top 4* to get 5, then multiply by 2 to get 10.Jasonhttp://www.jnagaoka.netnoreply@blogger.com