Chris Hunter

Don't forget about the 100+ free challenging tasks for secondary math teachers at www.map.mathshell.org/lesso... There are around 20 per grade level.

@camatsumoto10.bsky.social

My Attempts at Estimation 180 tasks - YouTube Andrew estimates tasks that he has not seen in years.

I'm having a blast revisiting Estimation 180 tasks.
My next attempt: Cheeseballs day 207. www.youtube.com/playlist?lis...

If you missed 206...it's there too. #estimation180 #iteachmath #mtbos

@camatsumoto10.bsky.social

🚨Attention #Algebra Ts, are you looking for ideas to review for a final exam❓🤔Check out this @geogebra.org collection of resources: interactive, engaging, and great for #MathPlay 🧮

🔗👇
www.geogebra.org/m/bmyse2ca

#MTBoS #ITeachMath #MathSky #MathsToday #STEM #ElemMathChat #EdTech #EdChat #EduSky

New lesson added to our free lesson library!

__The Tax Collector__

This is an expanded writeup of my original @nytimes.com Numberplay writeup from 2015. Features a tie-in to my more recent @ted-ed.bsky.social riddle too!

Great for grades 4 - 10.

mathforlove.com/lesson/tax-c...

Did the Dog vs People Names scatter plot today with a room full of k-12 computer science teachers, and WOW, the discussion we had! 🤓 #slowrevealgraphs

Dot Paper Task A low-tech task with high-level thinking

One of those heart-FULL teaching days:

New post: open.substack.com/pub/fawnnguy...

A Great Day of Teaching—and a New Home for the Blog Hey friends,

Happy Friday, everyone! Same old me, but my blog has a new home:
fawnnguyen.substack.com/p/new-blog-h...

Please come by to visit when you have a moment!
#MTBoS #iteachmath

[New Post] Ontario Math Links-My favourite #math related links from this week:

ontariomath.blogspot.com/2025/05/math...

links&help from @mrvalencia24.bsky.social @comapmath.bsky.social @openmiddle.com @robertkaplinsky.com @howiehua.bsky.social @unsolvedmre.bsky.social #MathChat #MTBoS #iTeachMath

same parabola

Dynamic window size in @desmos.com means that we only need 1 parabola now! Hooray!

www.desmos.com/calculator/z...

Craig Berube speaks to the media after the Leafs were eliminated from the 2025 Stanley Cup playoffs in front of a sign that reads "No Grit. No Grind. No Greatness." which is meant to be inspirational but instead is the most on-point thing ever written.

Canucks have made marketing misstep after marketing misstep over the past decade...but never done anything like this

Register by May 4 spring.ourconference.events

Join me for "Multiplication: More Than Repeated Addition and Times Tables" at the 2025 @mypita.bsky.social Spring Conference in Squamish on May 9!

Can you solve the puzzle? What goes in each blank of the area model? A 2 row by 3 column array is shown. To the left of the array, a 2x is shown in row 1 and a 3 is shown in row 2. A 10x^3 is shown in the 1st row, 1st column cell. The rest of the cells and the 3 spaces above the first row all have question marks. Under the array, the total area is given as 10x^3 + 23x^2 – 4x – 24.

Launch for tomorrow's polynomial division lesson. #iteachmath #MTBoS

With CBC now having called all ridings it's time for the land-vs-people-vote animation.

This year, I joined NCSS (social studies) as part of my registration for their national conference. (I presented about slow reveal graphs!) Today, their journal arrived.

What a beautiful surprise to see an article from fellow math educator/SS enthusiast @mathillustrated.bsky.social! 🤩

I'm not crying, you're crying.

chrishunter.ca/2017/11/05/o...

The Gr8 Chase Is Over! www.desmos.com/calculator/t...

(From 5 years ago… chrishunter.ca/2021/10/08/o...)

#MTBoS #iTeachMath

My favourite burn was when I was wearing a shirt with wide horizontal burgundy/light grey stripes. Kid announced “Hey guys, stop looking. I found him. Waldo.”

Cha-Ching!

Your outie makes art...in Desmos.
#severance #lumon #mathsky

This is a nice problem for students to think about!

The picture shows the word power with subscript 2 of 8 equals 3 and power with subscript 5 of 25 equals 2, followed by nine more without the value for students to figure out.

#MathsToday
Today was day 1 of logarithms in #MHF4U so I presented students with this, inspired by James Tanton.

Three square pans full of unbaked dark fruitcake, one large,one medium, and one small are sitting on a brown kitchen chair.

Made fruitcake from an old recipe that makes one large (8x8), one medium (6x6) and one small (4x4) cake.

How would you turn this into a math problem?

#mtbos #iteachmath

I love reading the small details about how Marilyn launched and facilitated the task!
#ITeachMath ♾️

The Real Environmental Impact of AI | Earth.Org In this article, we delve into the environmental impact of AI, exploring associated problems including emissions and e-waste.

And I must protest the statement in the "Integrating AI into the Arts" lesson that "Digital tools are 'green,' making them environmentally friendly from a climate justice and sustainability perspective". They may be inclusive but they are not environmentally friendly. earth.org/the-green-di...

This is the coolest, strangest thing you will watch (and likely re-watch over and over) today

Four problems about the height of two stacks of congruent rectangles.

Four problems about diagrams made up of congruent rectangles drawn on a coordinate grid.

Three problems that can be represented by simultaneous equations: one about the length of two strings of square and circular beads, one about the weight of a bucket containing different amounts of water, and one about the value of a given number of coins.

Applications of simultaneous equations might be my favourite topic. There are just so many fun problem types! We did these Don Steward beauties in Y10 #MathsToday.