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mathforlove.bsky.social
Dan Finkel
@mathforlove.bsky.social
1.3K followers 200 following 180 posts
Founder, Math for Love, mathforlove.com.
Dedicated to giving everyone a chance and a reason to fall in love with mathematics.
Curriculum writer, game developer, speaker, teacher of teachers.
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Reposted by Dan Finkel
davidkbutler.bsky.social
This is how we organised the Prime Climb board at One Hundred Factorial today. (cc @mathforlove.bsky.social ).
A photo of a large section of concrete floor with giant cards laid out, each with a Prime Climb circled number drawn on it. The outside is a ring of fully red prime numbers, except for 0 and 1 near the bottom. Close to this ring are four areas, one where the numbers are coloured yellow and red, green and red, purple and red and blue and red. Then there are fully yellow, fully green, fully purple and fully blue. Between them are ones with a mix of two colours, and right in the centre, ones with at least three colours.
November 26, 2025 at 1:54 PM
Reposted by Dan Finkel
inv3math.bsky.social
"'6yo: If 0 + 0 is 1, then would 8 times 0 be 4?'

... These “What if” questions are a sign that a child is taking a sort of radical ownership over their mathematical thinking. ... He wants something to be true to explore an idea, so he’s just doing it"!
mathforlove.bsky.social Dan Finkel @mathforlove.bsky.social · 16d
My 6yo asked me this morning:

"If 0 + 0 = 1, would 8 times 0 be 4?"

I wrote a blog post about it.
mathforlove.com/2025/11/big-...

#tmwyk #iteachmath #mtbos
Big Ifs - Math For Love
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mathforlove.com
November 19, 2025 at 8:31 PM
Reposted by Dan Finkel
fawnnguyen.substack.com
Happy Friday!
Finally had time to write—latest post on having students create the questions: fawnnguyen.substack.com/p/when-stude...
When Students Write the Questions
An alternative to endless practice: let students create the questions
fawnnguyen.substack.com
November 21, 2025 at 7:01 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up equilateral triangle which is used to create the regular hexagon (with 4” sides) shown in the second image. The triangle is made of 1 teal kite, 2 green triangles, 2 red trapezoids, and 2 pink triangles. The three images on the right show the progression of the design.
November 21, 2025 at 7:13 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up equilateral triangle which is used to create the regular hexagon (with 4” sides) shown in the second image. The triangle is made of 1 teal kite, 2 green triangles, 2 red trapezoids, and 2 pink triangles. The three images on the right show the progression of the design.
November 19, 2025 at 7:40 PM
mathforlove.bsky.social
We've recently been playing a modified version of Prime Climb with our son. If you have Prime Climb already and want to try playing with younger players (i.e., 6+), try out this version. It's been really fun!

mathforlove.com/2025/11/prim...
Prime Climb Rules for Younger Players - Math For Love
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mathforlove.com
November 17, 2025 at 9:03 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up equilateral triangle which is used to create the regular hexagon (with 4” sides) shown in the second image. The triangle is made of 1 yellow hexagon, 1 purple hexagon, 2 green triangles, and 2 pink triangles. The three images on the right show the progression of the design.
November 13, 2025 at 6:52 PM
mathforlove.bsky.social
Love to see this press about another Math Room from @mathhappens.bsky.social!

www.fox8live.com/video/2025/1...
LA Children’s Museum
www.fox8live.com
November 12, 2025 at 6:40 PM
mathforlove.bsky.social
My 6yo asked me this morning:

"If 0 + 0 = 1, would 8 times 0 be 4?"

I wrote a blog post about it.
mathforlove.com/2025/11/big-...

#tmwyk #iteachmath #mtbos
Big Ifs - Math For Love
0 0 votes Article Rating
mathforlove.com
November 12, 2025 at 6:37 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up equilateral triangle which is used to create the regular hexagon (with 4” sides) shown in the second image. The triangle is made of 2 blue rhombuses, 2 purple hexagons, and 4 green triangles. The three images on the right show the progression of the design.
November 11, 2025 at 6:57 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up equilateral triangle which is used to create the regular hexagon (with 4” sides) shown in the second image. The triangle is made of 2 blue rhombuses, 2 purple hexagons, and 4 green triangles. The three images on the right show the progression of the design.
November 10, 2025 at 7:31 PM
Reposted by Dan Finkel
dbarman.bsky.social
I love working with figurate numbers (see my Square Numbers handout mathinst.com/squareNumbers) esp. Triangle Numbers w/my students but never thought of @mathforlove.bsky.social's 'Step Numbers' (mathforlove.com/wp-content/u...) which now seems obvious to consider! #mathisfun #mtbos #iteachmath
November 4, 2025 at 5:02 AM
Reposted by Dan Finkel
mishellbaker.bsky.social
Just in case any of you think my manic enthusiasm for the artistry that is Outer Worlds 2 is exaggerated...

This is ONE of 20+ fully original songs I have heard so far on the 3 in-game radio stations you can tune into as you play.

www.youtube.com/watch?v=eguC...
The Outer Worlds 2 Official Game Soundtrack - Fibonacci
YouTube video by Obsidian Entertainment
www.youtube.com
October 31, 2025 at 5:03 AM
Reposted by Dan Finkel
korytellers.bsky.social
I always smile and think of @sneffleupagus.bsky.social every time I pull these out and use them for tutoring, which is a lot. I sure am thankful she suggested I get these a few years ago! They are SO helpful!!!!!😊
Picture of "Tiny Polka Dot" number card box.
October 27, 2025 at 9:36 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 gray dart, 2 pink triangles, 3 blue rhombuses, and 4 green triangles. The three images on the right show the progression of the design.
October 27, 2025 at 6:25 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 blue rhombus, 1 teal kite, 2 pink triangles, and 2 red trapezoids. The three images on the right show the progression of the design.
October 24, 2025 at 6:26 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 gray dart, 1 blue rhombus, 2 pink triangles, and 2 teal kites. The three images on the right show the progression of the design.
October 23, 2025 at 6:16 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 gray dart, 1 blue rhombus, 1 teal kite, and 4 pink triangles. The three images on the right show the progression of the design.
October 22, 2025 at 6:50 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 teal kite, 1 gray dart, 2 green triangles, and 4 pink triangles. The three images on the right show the progression of the design.
October 19, 2025 at 6:36 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 green triangle, 1 red trapezoid, 2 gray darts, and 2 teal kites. The three images on the right show the progression of the design.
October 17, 2025 at 6:45 PM
Reposted by Dan Finkel
howiehua.bsky.social
Did you know completing the square literally means to complete the square? I didn't when I was in high school and that would've made it so much easier.
October 16, 2025 at 11:08 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 1 purple hexagon, 4 green triangles, and 4 gray darts. The three images on the right show the progression of the design.
October 16, 2025 at 6:42 PM
Reposted by Dan Finkel
murrayh83.bsky.social
Pattern block play! #21CenturyPB #iTeachMath
The main image in the top left shows a radial design created with 21st Century Pattern Blocks. It was built by arranging six regular hexagons around a central hexagon. All seven hexagons share the same composition and have 4” sides. The first image along the bottom shows a scaled-up kite which is used to create the regular hexagon (with 4” sides) shown in the second image. The kite is made of 2 blue rhombuses, 2 teal kites, and 2 gray darts. The three images on the right show the progression of the design.
October 12, 2025 at 8:05 PM
Reposted by Dan Finkel
tilefarmer.bsky.social
Just arrived in Atlanta with these new shoes that I designed using Tile Farm studio. The tessellation on them is related to the truncated squares Archimedean tiling. If you come by the Tile Farm booth at @nctm.org this week I’ll show you how I made them!

#NCTM #NCSM2025 #iTeachMath #Tessellation
Pair of shoes with a swirling tessellation pattern.
October 12, 2025 at 2:05 AM
Reposted by Dan Finkel
countedout.bsky.social
From #RaceToNowhere to #CountedOutDoc, one thread connects them all: how belonging and self-belief shape mental health.

On #WorldMentalHealthDay, let’s design systems that nurture confidence, curiosity, and connection so no one feels “counted out.” 💚

#FilmForChange
October 10, 2025 at 10:08 PM