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Sam Leitermann-Long

@mathmansam

Mathematics Educator at Deerfield Academy. Husband. Father. Member of the #NeuroNerdSquad Pronouns: He/They

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07.11.2023
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Latest posts by Sam Leitermann-Long @mathmansam

A picture of a cardboard rocket ship creation with fins and a door.

A picture of a cardboard rocket ship creation with fins and a door.

It’s Box Day at the library and I’ve got a little astronaut (complete with Mae Jemison shirt!)

It was wild to see her create and guide the process (with a lot of dad provided fine motor skills)

03.01.2026 15:52 👍 1 🔁 0 💬 0 📌 0
Day 4 - Advent of Code 2025

I've completed "Printing Department" - Day 4 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/4

My code is here: github.com/samleiterman...

Its not the prettiest, but it got the job done! (I read the prompt incorrectly for a moment and was very confused.)

04.12.2025 14:20 👍 2 🔁 0 💬 0 📌 0
A screenshot of a Canvas outage due to AWS being down.

A screenshot of a Canvas outage due to AWS being down.

This morning I said to myself "Wouldn't it be funny if the AWS outage meant I couldn't submit grades?" Can confirm, its not particularly funny (don't get behind on your grading, kids!)

20.10.2025 15:02 👍 1 🔁 0 💬 0 📌 0
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July had been great to my garden!

28.07.2025 20:55 👍 2 🔁 0 💬 0 📌 0
A collage of garden images with vegetable plants.

A collage of garden images with vegetable plants.

A picture of a vegetable garden

A picture of a vegetable garden

A picture of potato plants in a row.

A picture of potato plants in a row.

Eggplant and pepper plants in a garden

Eggplant and pepper plants in a garden

Garden update, we’re thriving! Gotta make it through the heat wave over the next couple days🤞🏻

21.06.2025 15:46 👍 1 🔁 0 💬 0 📌 0

"i asked chatgpt" yeah well i went to the doctor, i went to the mountains, i looked to the children, i drank from the fountains there's more than one answer to these questions pointing me in a crooked line and the less I seek my source for some definitive closer I am to fine

21.06.2025 00:55 👍 5286 🔁 1200 💬 27 📌 155

If there’s one thing I want educators to think about it’s that we are the people responsible for that work, just like we’re responsible for guiding young people to positive behavior in a wide variety of areas! If you’re not proactively engaging with that work, you’re setting students up for failure.

18.06.2025 23:24 👍 0 🔁 0 💬 0 📌 0

Oh absolutely. The paper (and much of the commentary around it) actually spends a lot of time discussing the need for guardrails precisely because adolescents in particularly aren’t cognitively capable of understanding the distinction.

18.06.2025 23:24 👍 1 🔁 0 💬 1 📌 0
The Memory Paradox: Why Our Brains Need Knowledge in an Age of AI In an era of generative AI and ubiquitous digital tools, human memory faces a paradox: the more we offload knowledge to external aids, the less we exercise and

As an educator who is thinking hard about how to help my students navigate AI, this paper feels essential: papers.ssrn.com/sol3/papers....

The TL;DR? Don’t offload your work to AI or you don’t gain appreciable skills or knowledge. If you use AI as a partner it enhances.

18.06.2025 22:34 👍 2 🔁 0 💬 0 📌 1

It’s an Academy community plot, so kind of? It’s been a long tradition among Deerfield faculty to garden in our South division and our farming neighbors help plow the plots.

10.06.2025 22:27 👍 0 🔁 0 💬 0 📌 0
Pictures of a vegetable garden with a wire fence, tomato plants, and pumpkin plants.

Pictures of a vegetable garden with a wire fence, tomato plants, and pumpkin plants.

When I’m not doing math and education, I’m gardening! Here’s my 20’ x 40’ plot this year.

10.06.2025 21:05 👍 1 🔁 0 💬 1 📌 0

These two weeks have been filled with conversations about AI use and implementation, observation and coaching, and student leadership and have been incredibly impactful. I love the moments I get to spend actual time with my colleagues to think deeply about what is best for students!

10.06.2025 21:03 👍 1 🔁 0 💬 0 📌 0

Hi @jedediyah.com! Would love to chat about data science, I’ve been doing curriculum work recently and am full of ideas! (My latest idea is about buying a personal weather station, hooking it to Wunderground, and doing a multi year project involving weather data at our location.)

10.06.2025 11:18 👍 1 🔁 0 💬 1 📌 0
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I found the most incredible graph on the other site

13.04.2025 17:50 👍 3393 🔁 1013 💬 77 📌 109

Due to tariffs corn dogs are now a luxury item.

05.03.2025 00:01 👍 2 🔁 0 💬 0 📌 0

Top 10 Software Design Patterns (Ranked by Fuckability)

04.03.2025 19:46 👍 2 🔁 2 💬 0 📌 0

The best thing was after the whole thing happened, Brennan had to tell them that they actually needed them to be in their seats to fix it 😂

26.01.2025 00:59 👍 2 🔁 0 💬 0 📌 0

They’ve said they’re putting it on Dropout for sure! So you’ll be able to see how incredible it was :)

26.01.2025 00:40 👍 1 🔁 0 💬 0 📌 0

So there were technical issues that meant they needed to wait for some lighting changes, and Lou and Murph just decided to fill time by going full WWE.

26.01.2025 00:40 👍 2 🔁 0 💬 1 📌 0
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I went to The Gauntlet and the Garden to see Dimension 20 at Madison Square Garden and it was truly an incredible time!

It had everything, Lou stone cold stunnering Murph, Brennan kissing Murph, more Murph stuff, it was a blast!

#Dimension20

25.01.2025 15:41 👍 2 🔁 0 💬 0 📌 0

I actually think after looking at it you're 2/3 to get the valuable goat so you shouldn't switch!

08.01.2025 15:26 👍 1 🔁 0 💬 0 📌 0
A image describing a modification to the Monty Hall Problem. It reads:

You are playing the Monty Hall problem. However, you secretly know one of the goats is the former pet of an eccentric billionaire who lost it and is willing to pay an enormous amount for its return, way more than the car is worth. You really want that goat.

"The host is unaware of this. After you pick your door, as is traditional, the host opens one door, which he knows doesn't have the car. He reveals a goat, which you can tell is the ordinary goat and not the secretly valuable one. The host offers to let you switch doors.

Should you?

A image describing a modification to the Monty Hall Problem. It reads: You are playing the Monty Hall problem. However, you secretly know one of the goats is the former pet of an eccentric billionaire who lost it and is willing to pay an enormous amount for its return, way more than the car is worth. You really want that goat. "The host is unaware of this. After you pick your door, as is traditional, the host opens one door, which he knows doesn't have the car. He reveals a goat, which you can tell is the ordinary goat and not the secretly valuable one. The host offers to let you switch doors. Should you?

Someone sent me this problem the other day and I'm obsessed with the potential for variation here. What would you do? #ITeachMath

08.01.2025 14:21 👍 1 🔁 0 💬 2 📌 0
A picture of snowflakes on a grey background.

A picture of snowflakes on a grey background.

Look at this crystalline structure! My kids noticed it on our walk today!

24.12.2024 15:02 👍 7 🔁 0 💬 0 📌 0

Binomial on a coal pile

20.12.2024 01:40 👍 2 🔁 0 💬 0 📌 0
Day 14 - Advent of Code 2024

The math here was fun, but so was figuring out how to print the files!

I've completed "Restroom Redoubt" - Day 14 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/14

14.12.2024 13:16 👍 4 🔁 0 💬 0 📌 0

The more we learn, the more concerning this company becomes.

13.12.2024 21:16 👍 0 🔁 0 💬 0 📌 0
Day 13 - Advent of Code 2024

I love when being a mathematician is just a cheat code. Easy day easy life.

I just completed "Claw Contraption" - Day 13 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/13

13.12.2024 15:04 👍 3 🔁 0 💬 1 📌 0
Day 11 - Advent of Code 2024

I started off by being an idiot and then I think I was actually quite clever!

I just completed "Plutonian Pebbles" - Day 11 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/11

11.12.2024 05:33 👍 2 🔁 0 💬 0 📌 0
Day 10 - Advent of Code 2024

Do I use DFS in my daily life? No I do not. Am I glad I know how to do it? Yes I am.

I've completed "Hoof It" - Day 10 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/10

10.12.2024 14:55 👍 6 🔁 0 💬 0 📌 0
A picture featuring an overhead shot of the Deerfield Academy campus and three pictures of children.

A picture featuring an overhead shot of the Deerfield Academy campus and three pictures of children.

This is what life looks like these days, cute kiddos and a beautiful place to live!

08.12.2024 14:38 👍 6 🔁 0 💬 0 📌 0