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@math-problems

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20.11.2024
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Latest posts by @math-problems

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From the Mathematics of Christmas book by Fry & Evans pg. 84, when describing the Ham Sandwich Theorem:

02.03.2026 03:59 👍 2 🔁 0 💬 1 📌 0
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In #mathstoday, we are discussing u-sub vs guess and check when evaluating integrals #calculus #iteachmath

27.02.2026 23:24 👍 12 🔁 1 💬 2 📌 0
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*Visual based on problem #720 from exeter.edu/app/uploads/...

25.02.2026 18:39 👍 1 🔁 0 💬 0 📌 0
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in #mathstoday looking at a visual* for the line and parabola through the point (0, 1) that best fit the graph of y = cos x #iteachmath

25.02.2026 18:36 👍 3 🔁 0 💬 1 📌 0
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In #mathstoday learning about integration by parts #calculus #iteachmath

23.02.2026 17:53 👍 8 🔁 0 💬 0 📌 0
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In #mathstoday, ninth graders are using the "socks and shoes" method to find the equations of inverse functions #iteachmath

11.02.2026 19:48 👍 9 🔁 0 💬 2 📌 0
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In #Mathstoday, to apply their knowledge about perpendicular bisectors and angle bisectors of a triangle, students are using #Desmos to make a graph of a triangle, its circumcircle, and its incircle. #iteachmath #geometry

04.02.2026 18:43 👍 3 🔁 0 💬 0 📌 0
keyftcp2.pdf

Sample solutions: shorturl.at/veF19

28.01.2026 20:55 👍 0 🔁 0 💬 0 📌 0
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FTC Part 2 FTC Part 2 Last class, we learned about the Fundamental Theorem of Calculus Part 1: Today, we will learn about Part 2. Given the graph of f(t), explain why it makes sense that A(0) = 9π/4 Giv...

Today in #calculus learning about the Fundamental Theorem of Calculus Part 2 (taking the derivative of the integral of a function) shorturl.at/gD1VW. #iteachmath #mathstoday

28.01.2026 20:55 👍 8 🔁 0 💬 1 📌 0
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Ceva's theorem - Wikipedia

Yes, it's a fun one to prove but only applicable to a situation where a triangle has 3 concurrent cevians! Ceva's theorem - Wikipedia share.google/i3XFwvJKKEeS...

23.01.2026 17:41 👍 0 🔁 0 💬 0 📌 0
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I used same-height triangles to label areas of the triangles in terms of x, and then I applied Ceva’s theorem:

23.01.2026 02:52 👍 1 🔁 0 💬 1 📌 0

So
#MathsToday
I found out that if you have four adjacent Fibonacci numbers e,f,g,h then eh and 2fg are two elements of a Pythagorean triple.
1,1,2,3 - 3 and 4
1,2,3,5 - 5 and 12
2,3,5,8 - 16 and 30

09.01.2026 16:53 👍 35 🔁 6 💬 3 📌 1

I am teaching calculus for the 3rd year, and would also love to access your warmup questions if you are willing to share!

21.10.2025 01:10 👍 0 🔁 0 💬 0 📌 0

precalc! freely available materials! great combination

cc #iTeachMath ♾️

04.08.2025 19:19 👍 14 🔁 5 💬 1 📌 1
So, you think you're bad at math...
So, you think you're bad at math... YouTube video by Courtney Gibbons

Back on Twitter, my most viewed tweet was a link to my "math pep talk"—a video I made for my students that now has 23K views 👀

m.youtube.com/watch?v=kenf...

There's a lot to expand on in that video, like structural barriers to success in math. But I'm sharing it again anyway.

#MTBoS

30.12.2024 00:15 👍 39 🔁 10 💬 1 📌 4
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I turned my most boring math lesson into one of my most engaging ones. Here's how:

#edusky #iteachmath

19.11.2024 23:44 👍 113 🔁 22 💬 10 📌 6

Great wonder and exploration here! There's so much fun to have with quadratics; here are just a few nonroutine problems I put into Desmos folders 📂:
www.desmos.com/calculator/2...

#iTeachMath ♾️

03.12.2024 02:34 👍 19 🔁 3 💬 4 📌 1