Welcome one and all! Come on in and have a ball. 159 is semiprime and that's just fine.
Is it rarer to be a semiprime or a number with only odd digits? Odd increasing digits? Linear pattern in its digits? Alyssa would like it as is.
Pat Bellew's 159 facts are that 159 is the sum of 3 consecutive prime numbers (which?) and can be written as the difference of two squares in two different ways (don't you want to find them?).
He also has that __ __ •159 = __ __ __ __ using all 9 nonzero digits. Of course, you can brute force it, but can you deduce this digitally complete product?
What #playfulmath have you seen this month? Here's some of what I have noticed.
September started with Math on a Stick in full swing. Doesn't get more playful than that!
Katie Steckles and Jimi went over the math in the Spider-Man No Way Home end credits. I lost my mind when watching it in the theatre, and am so glad someone's sharing it. SO MANY MC Escher references.And as if the visuals weren't sufficient, the song is De La Soul's great cover of the Schoolhouse Rock classic, Three is a Magic Number.
|as yet undiscovered unpentennium
The Erikson Institute is a great source for early math insights, and here they cover four playful number books.
Charlotte Sharpe shared a quick, rich early math game with dice and subitizing cards.
Michael Minas & helpers are back with an inequality game, Big Bad Wolf and the Three Little Pigs.
Australian Math Circles shared this online interactive math game with lots of nice number recognition and sense images.
He also shared his daughters catmathart... a perfect transition to the next section.
Zarah Hussain shared her icosahedron statue on public display in London.
Paula Beardell Krieg is always busy with something creative and beautiful. For instance, her Rather Strange Solids. (But while you're there, poke around.)
Sophia Wood does programming, teaching and art. Her latest bird is perched on an unorientable branch...
Sam Hartburn sang to some Ayliean artwork for a recent Clopen Mic Night.
SimonLav with a Marvel-ous Desmos animation.
David Reimann nods to Magritte with this piece, related to his Bridges article.
Last but not least, I'm very happy to be a part of David Coffey's newest project: the Teaching Like Ted Lasso Podcast. Episode 1 is out, and it's on... PLAY! Check the show notes for scoonches of resources on play in math class.
As long as I'm on the pitch... just after this post on this blog are some very fun, well developed math games from my students.
And what's next? #Mathober! Sophia Wood has put together a list of prompts.