
Math postdoc at the University of Sydney. @j_lanier@mathstodon.xyz
Joined September 2009
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This is the last week to register before the program starts!
“21st century mathematics”: a free month-long online enrichment program for math teachers.
Info + register: bit.ly/21math2025
#mtbos #iteachmath
We are two weeks out from the start of "21st century mathematics", a program I run for K-12 math teachers. (Register now!) The program helps teachers connect the math they teach with some math that has been discovered in the 21st century. The program is flexible, free, & online.
All the info and the registration form can be found here:
justinlanier.org/21st-centur…
Please pass this along. And if it's a good fit for you, I hope you'll join in!
As a math appetizer for the program, here is a six-minute TED talk by mathematician Arthur Benjamin. The talk features the Fibonacci numbers, one of the two math topics for this year's program. (The other is bubbles!)
youtube.com/watch?v=SjSHVDfX…
Justin Lanier retweeted
"While everyone is glad to have a much-deserved break from the routine of early mornings and late evenings, as teachers we often end the school year thinking about the things we 'just didn’t have time to cover'."
Read NCTM Pres @LatrendaK's full message: nctm.link/a3H7t
Justin Lanier retweeted
Ten squares. The first one has perimeter 14. The second one has perimeter 22. Can anyone find ones with smaller or bigger perimeters? Or other examples that match these?
Intrigued? Check out "21st century mathematics", an enrichment program for teachers: justinlanier.org/21st-centur…
Ten squares. The first one has perimeter 14. The second one has perimeter 22. Can anyone find ones with smaller or bigger perimeters? Or other examples that match these?
Intrigued? Check out "21st century mathematics", an enrichment program for teachers: justinlanier.org/21st-centur…
Post-its and pattern blocks are both great for exploring this problem. So is Polypad: polypad.amplify.com/p
#MTBoS #ITeachMath #mathchat #mathschat #mathteacher #isoperimetricproblems
Justin Lanier retweeted
Are you a mathematics teacher? Would you like a taste of 21st century mathematics? See the link below to join a program for teachers run by Justin Lanier @j_lanier—stay for as long as you like, explore with friends, & get your own insights into accessible, deep questions in math
For lots of info about the program and to register, visit bit.ly/21math2025
Justin Lanier retweeted
Hi! In July I'm once again running a program for K-12 math teachers called "21st century mathematics". Its goal is to help teachers to connect math they teach with some math that has been discovered in the 21st century. Info+register:
justinlanier.org/21st-centur…
Pass it along!
Hi! In July I'm once again running a program for K-12 math teachers called "21st century mathematics". Its goal is to help teachers to connect math they teach with some math that has been discovered in the 21st century. Info+register:
justinlanier.org/21st-centur…
Pass it along!
“The program was so well organized!!! You explained the structure in advance. The materials were readily available. [...] The problem sets were wonderful. The problems were interesting and didn’t assume a lot of background knowledge."
If the program is a good fit for you, I hope you'll join in! And please do pass info along to colleagues and through networks so that it can reach folks who would enjoy and benefit from participating. Thank you!
justinlanier.org/21st-centur…






