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Comments on: Expressions Challenge http://reasonandwonder.com/expressions-challenge/ Better through reflection Mon, 13 Sep 2021 11:29:14 +0000 hourly 1 https://wordpress.org/?v=4.8.24 By: Michael Fenton http://reasonandwonder.com/expressions-challenge/#comment-8198 Sat, 19 Aug 2017 19:52:09 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-8198 Tricia, that’s an awesome idea! And one I’ve never heard/thought of before. Thanks for sharing!

]]> By: Tricia http://reasonandwonder.com/expressions-challenge/#comment-8197 Sat, 19 Aug 2017 19:25:24 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-8197 Another idea is to keep four 4’s, but to have them work on negatives. I haven’t seen those answers on the internet.

]]> By: Michael Fenton http://reasonandwonder.com/expressions-challenge/#comment-2090 Tue, 16 Sep 2014 22:51:06 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-2090 Tammy, I’m glad you enjoyed it! Will you use it with students? If so, I’d love to hear how it goes. 🙂

Thanks for visiting the blog!

]]> By: Tammy Lally http://reasonandwonder.com/expressions-challenge/#comment-2089 Tue, 16 Sep 2014 22:27:35 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-2089 Thank you so much for creating the Expressions Challenges! I love the Four Fours, also, and was sad to see the solutions so readily available.

]]> By: Jason Roy (@roybot) http://reasonandwonder.com/expressions-challenge/#comment-105 Fri, 29 Mar 2013 08:16:22 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-105 When I was student teaching I first learned about a challenge similar to this using the current year (it was 1998 ouch!) it got tough though in 2000, so I switched to 1234 (numbers must stay in order) I usually do this in the fall as a competition between classes, the idea being to be the first group to figure out all the natural numbers up to 100.

The last couple times I did it I would add new operators after a couple of weeks to keep the energy up and since the kids ran out of solutions.
I used an arrow –> to mean concatenate, I always allowed things like 12 + 3 + 4 but now you could do (12 – 3)–>4 to get 94.
One year I also let in the greatest integer function.

Now that it is 2013 I bet you could get a large number of answers using the year again. I will try this in the fall.

]]> By: Michael Fenton http://reasonandwonder.com/expressions-challenge/#comment-104 Fri, 29 Mar 2013 03:38:54 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-104 I like that this sort of challenge can be a large scale group challenge, or a bite-size task for individuals or small groups. Thanks for sharing the “clock” version. I think I’ll use that with my Pre Algebra students in the next couple of weeks.

]]> By: Debbie Boden http://reasonandwonder.com/expressions-challenge/#comment-103 Fri, 29 Mar 2013 03:37:02 +0000 http://reasonandwonder.wordpress.com/?p=232#comment-103 I did a similar “clock” exercise with my 7th graders, Three 3’s. They had to form the numbers 1-12 using only three 3’s. I asked then to not go in the Internet… I think most complied! 10 wastage hardest, then 8. They had fun (I think/hope)!

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