First video in my series to explore why commonly known mathematical facts are true, rather than just taking them for granted. First up: Pythagorean Theorem. Let me know if you would like to see any particular topic done. #math #iteachmath #mtbos youtu.be/YDnm58svCCQ

I have officially moved away from x/twitter and to Bluesky. Feel free to follow me there! bsky.app/profile/professorhp…

Been working on a set of GIFs demonstrate some ideas in my Math for Teachers course. Started with a sequence on demonstrating counting principles. You can find the full set here: professorheather.com/princip…

Here is my updated animation for the way the PMF of a hypergeometric distribution changes when you change the number of individuals with the desired property. #math #mtbos

Getting ready to teach Probability & Statistics this summer, so I am redoing all of my images and animations. Here is the PMF of the binomial distribution for n = 20. #math #mtbos

As I am cleaning/reorganizing my office, I wanted to share one of my shelves. The black abacus near the front of the second picture was a gift, but all of the rest were made for me by students.

Discussed CAT(0) cube complexes in my senior seminar today. The first picture is the model I created to demonstrate the ideas. The second has the ones they constructed.

Today for #BlackHistoryMonth, I want to introduce you to Thomas Fuller. Thomas was a slave in Virginia, and was renowned for his mathematical abilities, despite having no education. en.wikipedia.org/wiki/Thomas…

Today for #BlackHistoryMonth, you should learn about Benjamin Banneker. He had very little formal education, but had a strong interest in mathematics and built America's first clock. It was a wooden device that struck every hour. #math en.wikipedia.org/wiki/Benjam…

Today for #BlackHistoryMonth I want to introduce you to Elbert Cox. He was the first African-American to ever receive a PhD in mathematics. There is now a scholarship fund named in his honor that is used to help black students pursue studies. #math en.wikipedia.org/wiki/Elbert…

In honor of Black History Month, you should check out the story of Euphemia Haynes. She was an American mathematician and educator. She was the first African-American woman to earn a PhD in mathematics! #math #BlackHistoryMonth

We discussed nets and polyhedra in my education class today, so this is their homework. Create a dodecahedron full of different nets and their properties.

Finally, I look at finding the area of a triangle, knowing SAS using @geogebra. I also want to make a video of this one and discuss why this works! #math #iteachmath #mtbos geogebra.org/m/qavdkk38

For a different way to calculate area of a triangle, here is Heron's formula using @geogebra. I want to make a video explaining why this works soon! #math #iteachmath #mtbos geogebra.org/m/djpswb2w

Next up is an exploration on the area of general triangles using @geogebra. For this one, we use the formula for the area of the right triangle. #math #iteachmath #mtbos geogebra.org/m/u3x46gee

Working on area of triangles this week in one of my classes, so I was inspired. Here is an exploration on the area of right triangles using @geogebra #math #iteachmath #mtbos geogebra.org/m/fj7yvhbm

As an early holiday present to myself, I had my logo redone, and got a new animated version!

I always show memes in my classes. This is the one that always gets a super positive reaction from students. It is always their favorite.

Getting my coordinate systems ready to talk about the cross product and the right-hand-rule today!

My entry to the @3blue1brown competition. I look at one of my favorite bits of math: The Euler Characteristic. youtu.be/NDbl9XvBO1E

This is my go-to math kit for the fall semester. I will bring it to every class so I always have appropriate materials and we can create the math as we go! Any suggestions for things to add? #mtbos #iteachmath