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Posts by Justin Lanier

Cool! I don’t mean to be hyperbolic, but I for sure co-sign this challenge. Looking forward to sharing with some students tomorrow! They are pre-service teachers who have been working with parametric equations. Will let you know if any of them take it up.

5 days ago 6 0 0 0

😂

1 month ago 0 0 0 0

We were invited to read from our books, which I did of course. But first I had some opening words, which I thought I'd share with you here.

I'll share video too, once that's available.

2 months ago 27 9 4 0

My guess is that it is a play on the traditional still life, with the joke being that the TV makes the viewer in fact part of the still life; and that the rising cultural dominance of TV makes a more still life of/for us all.

2 months ago 0 1 0 0
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a man in a suit and tie is making a funny face Alt: “The Office” character Michael Scott in a suit and tie looking surprised and happy.

TIL that Fibonacci dedicated his famous book “Liber Abaci” to one Michael Scott. 😂

2 months ago 0 0 0 0

Oh. No u. Didn’t.

2 months ago 1 0 1 0
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@jonbois.bsky.social watching football

2 months ago 1 0 2 0
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Don’t You Dare Think Pentagons!

3 months ago 1 0 1 0

No shape is a square.

Because all shapes are there.

Be there or be square.

5 months ago 1 0 0 0
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Moon Duchin on the ‘Mathematical Quagmire’ of Gerrymandering

Really nice piece on math and democracy here.

(gift link)

www.nytimes.com/2025/11/03/s...

5 months ago 11 9 0 1

If you teach Year 6 maths in the UK and you'd be willing to Zoom chat briefly with a pre-service teacher in the US for a class project, let me know? Thanks!

5 months ago 2 1 0 1

Definitely! Thanks!

5 months ago 0 0 0 0

Very cool! Based on the registration form and what I know about other CMC-related events, am I correct in assuming that non-CA folks are welcome to attend? If so I’ll pass along to the pre-service teachers I work with! Thanks! PS enjoying the new pod eps! 👍👍👍

5 months ago 0 0 1 0

“The most beautiful fruit tray you can ever imagine.”

5 months ago 4 0 0 0

Both give the rating 0/0.

6 months ago 1 0 0 0

Similarly, Pennsylvania's top portion and its exclusive definition. I genuinely thought that was the point of those shapes before I recognized the shapes as state outlines. 😂

6 months ago 2 0 0 0
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Funnily enough, the top portion of Ohio might well qualify as a trapezoid by its own inclusive definition! 😄

6 months ago 2 0 1 0

How come?

6 months ago 1 0 1 0

Every bubble is popped on one side of it and raised on the other side. 😜

6 months ago 1 0 0 0

vghay also pkease

7 months ago 0 0 0 0

Sum Fun

7 months ago 3 0 0 0

Lovely!

7 months ago 1 0 0 0

Or—and hear me out here—give those assignments, if you think they are worth students doing, and make them a completion grade. (Or even, at times, for no grade at all.)

8 months ago 2 0 0 0

😄

8 months ago 1 0 0 0
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*our

8 months ago 1 0 1 0

I presented on this problem today!

You can find the slides here:
docs.google.com/presentation...

I don't use speaker notes (just vibes) but I think a recorded version exists and I'll try to link to it if/when I can.

cc #iTeachMath ♾️ bcc #MathSky 🧮

8 months ago 11 3 2 1

There should also be a new defensive position to prevent baserunners from using this shortcut. A "shortcutstopper" or something.

8 months ago 0 0 0 0
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Yesterday I spent a fascinating morning talking maths with a group of GPs. All professions require some level of numeracy, but doctors face particular challenges when communicating mathematical ideas.
I've written up a short blog: robeastaway.com/blog/gp-maths

8 months ago 22 9 3 1

....and nickel...

8 months ago 0 0 1 0

You are almost—but not quite—off the grid. 😄 Hope you are having a nice getaway!

8 months ago 1 0 0 0