Jenkins, F., van Kessel, H., Tompkins, D., & Lantz, O. (2007). Nelson chemistry: Alberta 20-30. Nelson Education.

terdragon transforms into duck curve

Dancing Tree

And the gold medal goes to Pierre Bézier. #olympics #mathsky #iteachmath #desmos

One superpower #math gives me is the ability to picture an interesting object in my head, spark up #Mathematica, and within a few minutes figure out how to make it "real." It's intoxicating! (code in ALT)

Was watching the Game of Thrones spin-off and saw mathematical designs. Decided to try one. This isn't what I saw but what I made AFTER I made what I saw!

Went out to eat, saw a pattern on a tapestry, took a picture, and came home and replicated it in python! Gracious!

It snowed… so naturally I started thinking about slope. ❄️🐇 Horizontal: ski across. Vertical: fall down. That’s the whole slope story.https://youtu.be/_TdNhrS4RXA?si=yFmSNRksi6-actZw

My son is teaching one-on-one in an elementary math classroom. I've been making animation and puppet videos to support his work. Here is a video on Greatest Common Multiple. youtu.be/K9qpGEiFYn0

Coffee Containers by Jenkins & Ungher

My wife Dr. Jennifer Quinn is more than a mathematician and math museum director. She is an artist! Here is her #LuxPortrait of Einstein, painted with luminous bacteria on a Petri dish. Such talent! #DontFearTheMicrobe #LuxArt @univpugetsound @microbe.tv @ASMicrobiology

I love when a simple image helps students stop “trying to remember” and start reasoning. Skiing for horizontal. Falling for vertical. It sticks because it makes sense.

What’s the slope of a horizontal line? What about a vertical one? Horizontal is like cross-country skiing Vertical is like falling. Math is easier when you can feel it. youtu.be/vxIOoZttoPI

Turns out math behaves better when everyone waits their turn.

I’ve also posted just the animation (no characters) as a classroom-ready clip—easy to pause and talk through why order matters. youtu.be/WcPEIub-Gas

PEMDAS isn’t about memorizing an order—it’s about avoiding chaos. Bob the Counting Sheep gets a visual explanation (with a little help) of why order matters in math. More sketches at Math Figures: www.youtube.com/@mathfigures... #iTeachMath #MathEducation

Mathematics takes “almost” seriously.

What does it mean to get     closer and     closer and     closer to zero without arriving? In mathematics, approaching can matter—even without arriving. More sketches at Math Figures: www.youtube.com/@mathfigures... #iTeachMath #MathEducation #MathArt

One of my favorite moments: When Clara saw the video of Zippy and jumped into showing him the correct reasoning. And THAT became the video!

I put just the Zippy clip on the channel as a classroom-ready resource—easy to pause and ask, “What went wrong here?” youtu.be/l74WoFSDodw

Zippy thinks he’s good at math because he’s quick. A second grader shows him where he went wrong. Speed isn’t understanding. Thinking matters. Videos appearing at: www.youtube.com/@mathfigures...

A small Sunday thought: a function keeps its promise. Same input → same output.

What is a function… and what definitely is not? 🤔 Puppet Dr. C introduces a very pushable example: touch a button → get a predictable result. Math with puppets, clarity, and a little mischief. ▶️ More videos coming soon: youtu.be/yn3hPqJQBs8 #MathEducation #ITeachMath #TeachingWithJoy

Not to be mean….

Spaced out shape!

'Tis the season - not only for the holidays but right now for a > billion dollar Powerball drawing. What are the odds? Watch my clip on on ABC News Live. abcnews.go.com/US/video/pro...

Sometimes google is charming. If you search for "times new roman" your results show up in Times New Roman font. Same with Calibri. Same with "Impact Font", and "Georgia font", and "Verdana font". (Maybe Helvetica too? I can't tell.) (I learned about this via Daring Fireball)

I'm in charge of the depart mental display. I have a few slides for "finals". I thought I'd share.

I'm in charge of the depart mental display. I have a few slides for "finals". I thought I'd share. This one works for faculty too! 😀

Fun with string art!

A new version of z = -(1-x^2)(1-y^2), with most of the struts parallel rather than the two families split equally. #MathSky #MathArt

Math's reset button for rotations....

I love fall. #photography

When I see a .1% chance of a comeback with under two minutes left in the game, I try to think of the type of circumstances that make up that .1% probability. Suggestions?

Simply stunning. A bee traversing a spiral? #photography

Magical one point perspective. A fairy ring in the redwoods. #photography

#BlueSkyArtShow #Angles #AlphabetChallenge #WeekLforLines #ColorADay #GreenSat #SaturdayStairs #StripesOnSaturday Zigzag escalation - 2025 #Phonetography #EastCoastKin #ArtYear #handrailsteps #clinginglife #pointy

When rowboats dream, they rest on land. #Photography

Puppet oversight. #photography

perfect wallet

A quiet reminder that every wave leaves its mark, then makes space for the next. #photography

Whenever I see this hand, I think of the end product of working out a complicated math problem.

An ode to pi? The symbol, a sphere and portions of pi on Santa Cruz Wharf. #photography

Walking through the redwoods of UC Santa Cruz. #photography

When the recycling bin is bigger than the landfill bin, it’s more than just design — it’s a reflection of how we value sustainable waste management.

Nature’s topology #Photography