Daniel Scher
@danielscher.bsky.social
Math educator who enjoys mathematical puzzles, origami, and Scottish dancing. Website: sineofthetimes.org
Pinned
Daniel Scher
@danielscher.bsky.social
· Jan 16
Some Web Sketchpad news: You can now build customizable activities, choosing from over 60 geometry and algebra tools, and then collect students' work to review all on one webpage. Get started here: geometricfunctions.org/fc/tools/. Feedback welcome!
Reposted by Daniel Scher
Miko Imura/Hirono Tyle shared a blogpost on this cool heptagon based #tessellation. note.com/tairu_mk/n/n... (in Japanese, but translates well.)
正7角形を並べてみると？──普通の会社員がarXivに論文を投稿する1年前の話｜平野たいる｜MathKonnect
こんにちは、平野たいる（@tairu_mk）です。 前回の記事は、初投稿ながら想像を遥かに超える反響をいただき、ありがとうございました。本稿において前提としている部分もあるため、未読の方はそちらを先に読んでいただけますと幸いです。
また、前回の記事がきっかけとなり、arXivに投稿した論文の解説記事がITmediaに掲載される運びとなりました。重ねてありがとうございます。
日本の会社...
note.com
January 2, 2026 at 11:32 PM
Miko Imura/Hirono Tyle shared a blogpost on this cool heptagon based #tessellation. note.com/tairu_mk/n/n... (in Japanese, but translates well.)
Thank you, John!
December 15, 2025 at 4:01 AM
Thank you, John!
Thanks! Do you have anything shareable from your talk?
October 19, 2025 at 2:37 PM
Thanks! Do you have anything shareable from your talk?
Would love a super-simple way to trace.
October 19, 2025 at 12:52 AM
Would love a super-simple way to trace.
That’s what happened to one of my articles as well.
September 18, 2025 at 11:00 AM
That’s what happened to one of my articles as well.
After the 100th time of showing the video of the shooter jumping off the roof, we decided it was time to turn off MSNBC. Even without the Kirk story, you are covering less and less news every night. Bad journalism.
September 12, 2025 at 2:57 PM
After the 100th time of showing the video of the shooter jumping off the roof, we decided it was time to turn off MSNBC. Even without the Kirk story, you are covering less and less news every night. Bad journalism.
Reposted by Daniel Scher
Taught my first #MathsToday lessons of the year! I forgot how much fun this topic is with Year 7. Today we played “guess the method from the calculation”.
September 4, 2025 at 5:00 PM
Taught my first #MathsToday lessons of the year! I forgot how much fun this topic is with Year 7. Today we played “guess the method from the calculation”.
Reposted by Daniel Scher
Next week, I'm giving a talk at the @momath.bsky.social MOVES conference on the purely probabilistic dice game Left Center Right. Rather than creating slides to explain the rules, I decided to try "vibe coding" to see what I could create using AI. Here it is divisbyzero.github.io/Left-Center-...
August 5, 2025 at 2:07 PM
Next week, I'm giving a talk at the @momath.bsky.social MOVES conference on the purely probabilistic dice game Left Center Right. Rather than creating slides to explain the rules, I decided to try "vibe coding" to see what I could create using AI. Here it is divisbyzero.github.io/Left-Center-...
Reposted by Daniel Scher
July 5, 2025 at 11:03 AM
Some fun with number bases (2 through 10) in my latest Sine of the Times blog post: www.sineofthetimes.org/more-fun-wit...
July 1, 2025 at 12:29 AM
Some fun with number bases (2 through 10) in my latest Sine of the Times blog post: www.sineofthetimes.org/more-fun-wit...
Reposted by Daniel Scher
Lots of…
Ooo,
But,
No
Wait
as we explored the statement, ‘Any quadrilateral can be made from two triangles’ in #MathsToday
Ooo,
But,
No
Wait
as we explored the statement, ‘Any quadrilateral can be made from two triangles’ in #MathsToday
June 30, 2025 at 4:15 PM
Lots of…
Ooo,
But,
No
Wait
as we explored the statement, ‘Any quadrilateral can be made from two triangles’ in #MathsToday
Ooo,
But,
No
Wait
as we explored the statement, ‘Any quadrilateral can be made from two triangles’ in #MathsToday
Reposted by Daniel Scher
June 21, 2025 at 10:05 AM
What’s your weird obsession with headlines that begin, “Here’s the 1…”? I suppose you think we only have the attention to read one piece of information before we get bored.
June 21, 2025 at 12:55 AM
What’s your weird obsession with headlines that begin, “Here’s the 1…”? I suppose you think we only have the attention to read one piece of information before we get bored.
Still a work in progress: www.geometricfunctions.org/fc/unit2/mys...
Mystery Transformations
This page supports the Mystery Transformations activity.
www.geometricfunctions.org
June 7, 2025 at 9:00 AM
Still a work in progress: www.geometricfunctions.org/fc/unit2/mys...
Reposted by Daniel Scher
June 7, 2025 at 8:23 AM
We have some good Web Sketchpad-based tech explorations here: www.sineofthetimes.org/category/geo...
June 3, 2025 at 4:44 PM
We have some good Web Sketchpad-based tech explorations here: www.sineofthetimes.org/category/geo...
Reposted by Daniel Scher
NEW post: Cracking the Strategy, when a 4th grader explains her thinking
fawnnguyen.substack.com/p/cracking-t...
fawnnguyen.substack.com/p/cracking-t...
Cracking the Strategy
A fourth-grade window seat to line plots and dot paper fractions
fawnnguyen.substack.com
June 3, 2025 at 2:10 AM
NEW post: Cracking the Strategy, when a 4th grader explains her thinking
fawnnguyen.substack.com/p/cracking-t...
fawnnguyen.substack.com/p/cracking-t...
Reposted by Daniel Scher
What fraction of the triangle is shaded?
#geometrypuzzle
#geometrypuzzle
May 29, 2025 at 1:20 PM
What fraction of the triangle is shaded?
#geometrypuzzle
#geometrypuzzle
Reposted by Daniel Scher
Four quarter circles. What fraction is shaded?
#geometrypuzzle
#geometrypuzzle
May 30, 2025 at 9:39 AM
Four quarter circles. What fraction is shaded?
#geometrypuzzle
#geometrypuzzle
Reposted by Daniel Scher
Reposted by Daniel Scher
New blogpost on a #mathart lesson we did with preservice teachers and 1st and 2nd graders with some string art type patterns. mathhombre.blogspot.com/2025/05/star... #teachered
Star Patterns - a Mathart Lesson
One of my favorite courses to teach is our embedded elementary whole number and operation teacher prep course. Typically they teach every co...
mathhombre.blogspot.com
May 26, 2025 at 2:54 AM
New blogpost on a #mathart lesson we did with preservice teachers and 1st and 2nd graders with some string art type patterns. mathhombre.blogspot.com/2025/05/star... #teachered
This was a no-brainer for me when it came to funding this project on Kickstarter. www.kickstarter.com/projects/bra...
Elipso - Ellipse Drawing Tool
Inspired by the Archimedes Trammel, we present to you Elipso. A solid brass, scalable ellipse drawing tool.
www.kickstarter.com
May 4, 2025 at 1:38 AM
This was a no-brainer for me when it came to funding this project on Kickstarter. www.kickstarter.com/projects/bra...
Reposted by Daniel Scher
A 'flip' but probably easier than a 45˚ reflection
April 15, 2025 at 4:05 PM
A 'flip' but probably easier than a 45˚ reflection
Reposted by Daniel Scher
Kudos to @nytimes.com for covering ARC-AGI in such an exquisite example of interactive data journalism. Amazing spot for @fchollet.bsky.social as well.
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
Are You Smarter Than A.I.?
Some experts predict that A.I. will surpass human intelligence within the next few years. Play this puzzle to see how far the machines have to go.
www.nytimes.com
April 1, 2025 at 12:41 AM
Kudos to @nytimes.com for covering ARC-AGI in such an exquisite example of interactive data journalism. Amazing spot for @fchollet.bsky.social as well.
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...