tag:blogger.com,1999:blog-5544661968326910027.post5496824006773462547..comments2022-09-24T04:54:14.543-07:00Comments on Three J's Learning: Crocodile tears for "real world" mathJGR314http://www.blogger.com/profile/11702319994021721608noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5544661968326910027.post-27444599906862923422015-10-22T07:41:14.143-07:002015-10-22T07:41:14.143-07:00A friend noted that I missed another obvious objec...A friend noted that I missed another obvious objection to the context of the problem: almost any reader will have the intuition that the zebra can clearly run faster on land than the crocodile can and that zebra are highly alert to dangerous predators. From these, we could conclude that, if the crocodile spends any time moving on land, the zebra will escape.JGR314https://www.blogger.com/profile/11702319994021721608noreply@blogger.comtag:blogger.com,1999:blog-5544661968326910027.post-89668499353321711572015-10-22T07:29:05.267-07:002015-10-22T07:29:05.267-07:00Interesting question. I asked my two older J's...Interesting question. I asked my two older J's and got two fast "math class" answers back:<br />a> 4 to 2 b/c each side scores the same again in the second half.<br />b> 3 to 3 b/c they change ends at half-time!<br /><br />When I have a chance, I'll write up some more notes on the rest of the conversation and ideas we had for further exploration. Obviously, there is a lot that can be done with this question, treating it as a gateway for statistical analysis and building a certain kind of probabilistic number sense.JGR314https://www.blogger.com/profile/11702319994021721608noreply@blogger.comtag:blogger.com,1999:blog-5544661968326910027.post-11671411839694984992015-10-21T22:56:28.179-07:002015-10-21T22:56:28.179-07:00The best "real world" math problem I eve...The best "real world" math problem I ever got in primary school was: "The score in a football match at half-time is 2-1. What will be the final score?" ... I still don't know if the math book authors meant that as a discussion starter and to encourage critical thinking or if they actually wanted the answer 4-2, but except for me all my school mates and my math teacher seemed happy with this totally artificial "math problem reality".Clumpytreehttps://www.blogger.com/profile/09068137290382140713noreply@blogger.com