Gretel Stern
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gretelstern.bsky.social
Gretel Stern
@gretelstern.bsky.social
71 followers 82 following 19 posts
Hey friends! I'm a math teacher and karaoke singer that enjoys crocheting, trivia, clogging, and travel. I'm always on the lookout for a quirky roadside attraction!
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Reposted by Gretel Stern
mathgrrl.com
CALLING ALL CROCHET GEEKS AND GRANNIES

Do you want to crochet something that ends up in a mathematical art exhibit in Paris* next summer? Join the project at www.grannylifecrochet.com

* We will find out in September if the project makes it into the Paris exhibit
July 16, 2025 at 3:58 PM
Reposted by Gretel Stern
imathtutor.bsky.social
#MathEd #humor
July 25, 2025 at 5:04 PM
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dbarman.bsky.social
Lots of #mathisfun so far and it’s only lunchtime in #STEMcamp at #NCSSM www.ncssm.edu/courses/math... ‘Math Explorations for Curious Children’. This morning we looked at finding number & sum of factors, going from one to next perfect cube, calendar math & Doomsday Rule, & more. #mtbos #iteachmath
July 17, 2025 at 4:24 PM
Reposted by Gretel Stern
mathequalslove.bsky.social
Grade Level Hidden Word Puzzles - I created these from kindergarten all the way through 12th grade. Perfect for the first week of school!

mathequalslove.net/grade-level-...

#mtbos #iteachmath #puzzlingclassroom #mathsky #edusky #firstdayofschool #firstweekofschool
July 17, 2025 at 5:42 PM
Reposted by Gretel Stern
malmeida.bsky.social
New unit rate context just dropped #MTBOS #ITeachMath
July 1, 2025 at 3:17 PM
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dwekselgreene.bsky.social
Playing Mastermind with my 6 year old inspired me to make this in #Desmos. I discovered I'm a lot worse at guessing than I thought! #MTBoS #iteachmath classroom.amplify.com/activity/687...
July 13, 2025 at 6:17 PM
Reposted by Gretel Stern
theericklee.bsky.social
It's time to kick off #MathPhoto25 with #squares! Hunt for square shapes and perfect square numbers. Take photos & share on Bluesky using the hashtags #MathPhoto25 and #square. Please add alt text to your photos for increased access. #ITeachMath
The week one prompt of the Math Photo Challenge. Look for squares. Where to you see square shapes and perfect square numbers? Example photos are dice with square faces and the perfect square number 4 on top, a square sewer grate and square pint boxes of fresh summer strawberries.
June 5, 2025 at 12:59 PM
Reposted by Gretel Stern
mathsweek.scot
#30DaysWild Day 6: Time to head outside with a ruler for some measuring fun!

All activity descriptions + free downloadable resources on our website ➡️ mathsweek.scot/news/...

#MathsWeekScot #EduSky #MathsToday #UKMathsChat #tmwyk
A colourful graphic with a blue background and a yellow frame. Overlapping the top of the frame is a white circle with a picture of a clipboard, pencil and ruler. Inside the yellow frame are the words "Measuring Challenge" and the hashtags #MathsWeekScot and #30DaysWild. Under the frame is the Maths Week website URL.
June 6, 2025 at 7:00 AM
Reposted by Gretel Stern
mathsweek.scot
#30DaysWild Day 7: Making potions is a fun activity involving counting and measuring.

All activity descriptions + free downloadable resources on our website ➡️ www.mathsweek.scot/n...

#MathsWeekScot #EduSky #MathsToday #UKMathsChat #tmwyk
A colourful graphic with a purple background and a yellow frame. Overlapping the top of the frame is a white circle with a picture of a scroll with a potion recipe. Inside the yellow frame are the words "Making Potions" and the hashtags #MathsWeekScot and #30DaysWild. Under the frame is the Maths Week website URL.
June 7, 2025 at 9:00 AM
Reposted by Gretel Stern
theericklee.bsky.social
#MathArt project in calculus class today. Students generated "Reimondrian" art in @desmos.com. (Inspired by @mathzorro.bsky.social). Reimondrian is a mash up of Reimann sums and Piet Mondrian art. Some very creative students. #ITeachMath #MathsToday
Student generated Reimondrian art Student generated Reimondrian art Student generated Reimondrian art
June 6, 2025 at 10:35 PM
gretelstern.bsky.social
@anniekp.bsky.social Inspired by your #mathartchallenge, my MαRT class painted the 120 permutations of 5 colors along the base of my classroom walls. The students were so proud! Thank you for sharing your ideas!
March 31, 2025 at 1:08 PM
Reposted by Gretel Stern
ayliean.bsky.social
Setting a wee ✨Math Art challenge✨ for myself starting tomorrow - here are my prompts.
I would obviously looooove if anyone else wanted to join in on any of the days!
Before I draw the prompt sheet up pretty, are there any glaring omissions or faux pas’s? ☺️
A turquoise spreadsheet grid containing the drawing prompts: circle, on a square grid, nature, swirly, discovery, single line, how many, pentagon, growth, map, proof, on an iso grid, zero, irrational, triangle, connected, symmetry, chance, forty-two, repetition, font, hexagon, together, equal, chaos, choice, tangled, quadrilateral, unsolved, game, change
February 28, 2025 at 9:25 PM
Reposted by Gretel Stern
tilefarmer.bsky.social
Had lots of fun recreating a pattern @n-gons.bsky.social recently posted but with a minor twist using #TileFarm studio. I used two colors for clarity, but this is made using a single tile based on a geometric series of 30-60-90 triangles. #tessellation #iTeachMath #Math #MTBoS #mathart
February 27, 2025 at 12:06 AM
Reposted by Gretel Stern
karencampe.bsky.social
Hooray!!! 🎉 🙌 🥳
My favorite...
#geometry #iTeachMath
karendcampe.wordpress.com/2022/06/29/c...
Circles Are All Right!
What do right angles have to do with circles?  And why do I love teaching the circles unit in Geometry class, even when time is running out at the end of the academic year?  Read on to fi…
karendcampe.wordpress.com
February 21, 2025 at 6:27 PM
Reposted by Gretel Stern
theericklee.bsky.social
Started class today with a quick Estimation180 prompt. How many pennies in the bowl? Average class estimate was 393 (min 226, max 800). Way more under-estimates than over-estimates. #ITeachMath estimation180.com/day-151/
Students guess by placing post-it notes on the white board. A bowl full of pennies.
February 21, 2025 at 8:35 PM
Reposted by Gretel Stern
cubesart.bsky.social
My calc 2 quiz today may or may not involve this graph:
www.desmos.com/3d/8equeo77kl
Untitled Graph
www.desmos.com
February 14, 2025 at 4:18 PM
Reposted by Gretel Stern
jennalaib.bsky.social
New #SlowRevealGraph

Hey, Eagles Fans - new graph about the team's unstoppable play! graph & slow reveal by Bob Lochel

Length of Rushing Touchdowns, Philadelphia Eagles' Saquon Barkely & Jalen Hurts (2024)
Length of Rushing Touchdowns, Philadelphia Eagles’ Saquon Barkely & Jalen Hurts (2024)
Length of Rushing Touchdowns, Philadelphia Eagles' Saquon Barkley & Jalen Hurts (2024)graph by Bob Lochel, slow reveal by Bob Lochel (Slide deck includes notes and questions to elicit discourse) Type of Graph: dot plot Visualization Source: Bob Lochel, using Desmos Data Source: Potential Math Content: dot plots, estimating values, developing theories about why, comparing values Potential Content Connections: football, sports, Super Bowl, Philadelphia Eagles
slowrevealgraphs.com
February 12, 2025 at 10:13 PM
Reposted by Gretel Stern
mathequalslove.bsky.social
Last school year, a blog reader sent me a list of words for making a Winter Triples Puzzle. I finally got around to writing it up in a blog post today since it was a snow/ice day.

mathequalslove.net/winter-tripl...

#mtbos #iteachmath #puzzlingclassroom #mathsky #edusky
February 12, 2025 at 10:41 PM
Reposted by Gretel Stern
triangleman.bsky.social
Hi friends!

I have a book coming out next month!

It is full of *gorgeous* photos such as seen on the cover here.

There is one really fun photo that didn't make it into the book...
Book cover for How Did You Count? There is a sideways diamond of shiny plastic spheres carefully arranged on a wood floor. The left "half" of the diamond is a triangle with base five, made of light blue spheres. The larger, right "half" is a triangle with base six, made of red spheres.
February 12, 2025 at 12:53 AM
Reposted by Gretel Stern
playwyourmath.bsky.social
31. Nets and Nots playwithyourmath.com/2025/02/01/3...
February 1, 2025 at 5:36 PM
Reposted by Gretel Stern
abiruiz.bsky.social
Love this visualization of data at different stages. (Via Monica Rosales Ascencio)
LEGO bricks illustrate the transformation of data: 1. DATA: A random pile of colorful LEGO pieces. 2.SORTED: Pieces grouped by color. 3.ARRANGED: Stacked into organized towers. 4.PRESENTED VISUALLY: Towers form a bar graph. 5.EXPLAINED WITH A STORY: Pieces built into a detailed house model.
February 2, 2025 at 4:46 PM
Reposted by Gretel Stern
ayliean.bsky.social
A big friendly triangle, coming towards you (don’t panic)
A seaside landscape scene overlayed with a doodle of a triangle coming towards you with a smiley face and the words “friendly triangle, coming towards you”
February 2, 2025 at 11:39 PM
Reposted by Gretel Stern
hpicciotto.bsky.social
Possibly useful for Valentine's Day: Katherine Pauer's "Cutting Out Hearts"

www.mathed.page/puzzles/hear...

#mtbos #iteachmath #mathed
February 1, 2025 at 5:08 PM
Reposted by Gretel Stern
ayliean.bsky.social
This one goes out to the person who stopped me in the club the other night and said
“YOU DO THE NUMBERS!”

I do do the numbers, follow for more numbers🌈💗✨
February 1, 2025 at 1:28 AM