Math(s) Teachers at Play 87
Hello, and welcome to the 87th Edition of the monthly blog carnival “Math(s) Teachers at Play”. For those of you unaware, a blog carnival is a periodic post that travels from blog to blog. They take the form of a compilation post and contain links to current and recent posts on a similar topic. This is one of two English language blog carnivals around mathematics. The other is “The carnival of mathematics“, the current edition of which can be found here.
87 is an interesting number, it is semi – prime, with prime factors 3 and 29. It is the sum of the squares of the first 4 primes and the sum of the factors of the first 10 natural numbers.
This month has been fairly busy in the way of maths blogs and we have a treat for you, so to start the carnival here are the submissions we recieved:
Sue Van Huttam has written “Teaching my son” which lays out the downside to unschooling.
@teachmathfree have shared “find the day” which is a nice little trick to impress your friends and classes.
Pawan Kumar has shared three posts, the first “Team selection” explains the concept of combination starting from a permutation. It doesn’t use a formula, rather logically arrives at it. It is a part of a set of posts about understanding and solving basic probability problems. I wrote these posts for the math club at my daughter’s middle school. The second: “My shoes have negative weight!” is one of the fun math/science conversations I have had with my middle schooler. When my younger kid made a seemingly impossible claim, my middle schooler was ready to dig into the possibility of negative weight. And the third is Why don’t we teach the whys?” I wrote this post when my daughter was repeatedly disappointed by being handed out formulas without any explanation of how they came about. It includes couple of conversations which show the joy of the Aha! moment that she was being deprived of at school.
Manan Shah (@shahlock) has submitted “Welcome to the second grade Dr Shah” which he tells us is: This blog post is the teacher’s retelling of the events that took place when I went to a second grade class. All in all, a great, fun experience for all. Graph Theory in second grade isn’t out of their reach!
Celeste Sinclair (@mysterious_jedi) submitted “Rethinking Statistics” Reflections and resources related to teaching onevariable statistics to 10th graders.
The final submission is from Festival founder Denise Gaskins (@letsplaymath) who shares her New Internet maths reference pages. which is a collection of excellent links.
In the UK this month saw a national maths teachers conference take place, I was unable to attend, but have really enjoyed catching up what I missed in the many reviews. Particularly from Tom Bennison (@DrBennison) and Jo Morgan (@mathsjem)
I wrote this piece in the challenges facing teachers and maths teachers in particular.
Ed Southall (@solvemymaths) shared this fantastic area puzzle
Stuart Price (@sxpmaths) has put together a lovely post outlining his philosophy on maths teaching How I teach maths.
Paul Collins (@mrprcollins) has put together a lovely write up of a year 2 problem solving day he was involved with.
Colin Beveridge (@icecolbeveridge) has started a new agony uncle page and kicks off with the question “Is the Fibonacci series witchcraft?”
Ben at Math with bad drawings (@benorlin) has put together this fantastically funny post that had me in stitches.
And finally here’s another puzzle I got off Ed:

July 4, 2015 at 9:39 pmMath Teachers at Play #87 via CavMaths  Let's Play Math!