Todd Feitelson 's Avatar

Todd Feitelson

@toddf9.bsky.social

High School math teacher. Desmos Fellow.

120 Followers  |  86 Following  |  46 Posts  |  Joined: 23.09.2023  |  2.4454

Latest posts by toddf9.bsky.social on Bluesky

Nice. Are you going with the random first word method?

12.11.2025 22:51 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
white 3-d printed chess set

white 3-d printed chess set

And through the miracle of google photos search...turns out it was in 2018. Good grief.

05.11.2025 23:00 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I can't remember exactly. I did it as a project after the AP, so it was a little lax with rules. I may have had a couple of kids work on pawns, but the idea was always to print 8 (16, actually) the same.

05.11.2025 22:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This is awesome. I did this a few years ago with a BC Calc class. The solution for the top of the rook (and queen, I think) was challenging and interesting. The knight was just weird looking.

05.11.2025 13:12 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Happy Cinco de Mayo (southern hemisphere).
@davidkbutler.bsky.social @nomadpenguin.bsky.social

*I think I make this joke every year. Does it even make sense in Australia? (Note: I'm not asking if it's funny.) Sorry to burden the only two southern hemispherians I know.

05.11.2025 13:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

We seem to cut it some slack when we allow it to integrate across a removable discontinuity. Can’t we show the same grace here??

04.11.2025 12:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Wordle 1,586 5/6

⬜⬜🟩🟩🟩
⬜⬜🟩🟩🟩
⬜⬜🟩🟩🟩
🟩⬜🟩🟩🟩
🟩🟩🟩🟩🟩
Weird and fun things happen by guessing random words.

22.10.2025 16:19 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

So I’ve been just using the first word that comes to mind every morning. It was strange at first but now I think the game is much more fun. That’s my recommendation.

20.10.2025 10:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Kinda teed that one up for me you did.

When mine finally came up in one, I was afraid of settling on a new first word that had already been used. I thought about doing some research to pick an unused word, but that seemed like no fun.

20.10.2025 10:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I can see why you chose that word. It really is ideal.

20.10.2025 01:11 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This happened to me a couple of months ago. Exciting moment, but then the next few days were chaos. Now I embrace the just pick a random word every day strategy. Please advise how you choose to go.

18.10.2025 21:33 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Wordle 1,576 3/6

⬜⬜🟨⬜⬜
⬜⬜🟨🟩⬜
🟩🟩🟩🟩🟩

Lucked out.

12.10.2025 12:28 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Y’all are a day ahead. I look forward to the challenge.

12.10.2025 02:01 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Seems to be going well so far.

05.10.2025 22:55 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I’d for sure hang but alas the dates are a conflict with school so I won’t be there. Good luck at trivia (which I assume will be part of your week)!

17.09.2025 21:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I continue to let my students know that the goal is not the goal. And the end is not the end.

24.07.2025 11:25 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Sorry to hear this Lara. All I’ve got to offer is positive vibes. Someone great will find you!

10.07.2025 22:10 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

Any use for these anywhere by anybody? I’m glad to ship them. Please send this along to anyone who might care. #iteachmath

02.06.2025 17:13 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Could not be cooler.

23.05.2025 23:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
rose bowl Suppose it starts to rain. During the first second, one drop of rain falls in the Rose Bowl. During the second second, two drops fall, then four drops during the third second, and so on, continuing ...

How long would it take to fill the Rose Bowl with rain?
(an alternative to "folding paper in half again and again" and "penny doubled every day" problems which I've found Students to be too familiar with already.) #iteachmath
docs.google.com/document/d/1...

10.04.2025 13:43 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Post image

For you hockey stats guys from the Washington Post. @joelbezaire.bsky.social

10.03.2025 13:23 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I mean, who needs teachers anymore?

28.02.2025 14:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 28.02.2025 14:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image 28.02.2025 14:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image 28.02.2025 14:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Post image

Gee willikers, AI is amazing and forcing me to rethink how I ask questions. Is it even possible? Here's what I think of as a semi-guided "thinking" question. Google's solution in the comments.

28.02.2025 14:07 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Factor!
(Came to it organically when giving a quiz on polynomials. "Factor" the noun was specifically on the vocab list; "factor" the verb was in the instructions to the problem.)

28.02.2025 13:52 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

List?

23.02.2025 22:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I was driving home along a highway at 60 miles an hour. When I got exactly 60 miles from home I decided I would gradually slow down so that my speed was exactly my distance from home. How long did it take me to get home? What was my average speed? How long did it take to get 1 mile from home? #BTC

14.02.2025 14:39 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
soniya complex graph

Cool student @desmos graph.

www.desmos.com/calculator/p...

30.01.2025 18:39 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

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