Comments on: The Twenty-Five Days of Christmas /2014/the-twenty-five-days-of-christmas/ less helpful Fri, 05 Dec 2014 21:31:52 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Pete Spencer /2014/the-twenty-five-days-of-christmas/#comment-2384327 Fri, 05 Dec 2014 21:31:52 +0000 /?p=22534#comment-2384327 Vi Hart (whom I love) made this video a few years ago:
https://www.youtube.com/watch?v=sxnX5_LbBDU

I sometimes play it to my (UK Year 4) maths group at the end of term, and then we can chat about all sorts of fun maths; they love it!

]]> By: Steve Ransom /2014/the-twenty-five-days-of-christmas/#comment-2383128 Thu, 04 Dec 2014 15:43:40 +0000 /?p=22534#comment-2383128 @Dan – I love your comment. I used to do this with my 4th graders and it was interesting to see which students crumbled and which ones persisted. Not everyone loves the “challenge”.

]]> By: Ste /2014/the-twenty-five-days-of-christmas/#comment-2383056 Thu, 04 Dec 2014 14:36:53 +0000 /?p=22534#comment-2383056 I worked out an estimate of the cost of love, not a very open ended task, but did promote a certain amount of discussion.
See it here: http://secondarymaths.wikispaces.com/Number

]]> By: Julie /2014/the-twenty-five-days-of-christmas/#comment-2383047 Thu, 04 Dec 2014 14:27:27 +0000 /?p=22534#comment-2383047 There is a great lesson by Hallie Foster that was published in the CMC Communicator back in September 2011. I don’t have a link but would be happy to send it to anyone who is interested.

]]> By: Louisa /2014/the-twenty-five-days-of-christmas/#comment-2383032 Thu, 04 Dec 2014 14:08:02 +0000 /?p=22534#comment-2383032 For those teaching in classrooms with students who celebrate holidays other than xmas, you can do this same problem with Hanukkah candles lit and burned all the way down over the 8 (or more!) days. In the past, I have let the students pick between the two problems.

]]> By: Xavier /2014/the-twenty-five-days-of-christmas/#comment-2382809 Thu, 04 Dec 2014 07:59:44 +0000 /?p=22534#comment-2382809 Related: https://en.wikipedia.org/wiki/Wheat_and_chessboard_problem, a classical problem.

]]> By: ixsi /2014/the-twenty-five-days-of-christmas/#comment-2382686 Thu, 04 Dec 2014 05:37:04 +0000 /?p=22534#comment-2382686 Also have a look at this comic from SpikedMath with a nice visualisation of the “12 days of Christmas”: http://spikedmath.com/471.html

]]> By: Kevin Hall /2014/the-twenty-five-days-of-christmas/#comment-2382519 Thu, 04 Dec 2014 02:32:35 +0000 /?p=22534#comment-2382519 Have you read the children’s board book Hippos Go Berzerk? If you read it to the last page, it offers a similar moment: “One hippo, alone once more, misses the other 44.”

http://www.amazon.com/Hippos-Go-Berserk-Sandra-Boynton/dp/0689808186

]]> By: Cathy Yenca /2014/the-twenty-five-days-of-christmas/#comment-2382445 Thu, 04 Dec 2014 00:33:15 +0000 /?p=22534#comment-2382445 Ha! I used to have 7th graders calculate the number of gifts each day, the total number of gifts at the end of the 12 days… and even write and perform (in costume) cheesy “Math Carols” (think, Ge-o-me-tree Ge-o-me-tree! to the tune of Oh Christmas Tree! It was very, very corny!)

I have never thought of the “x” days of Christmas extension. I like it too.

]]> By: MaryAnn Moore /2014/the-twenty-five-days-of-christmas/#comment-2382392 Wed, 03 Dec 2014 23:07:37 +0000 /?p=22534#comment-2382392 I love this! I’m going to give this task to my 8th graders in a couple days. I’ll write about it and let you know how it goes.

]]>