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DavidPetro314

@davidpetro314

I am tribal. Math is one of my tribes & so is Ironman Triathlon. Though here I only post about Math & Science. Oame PastPresident Desmos Fellow #MTBoS

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11.10.2023
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Latest posts by DavidPetro314 @davidpetro314

Preview
Math Links for Week Ending Mar 6th, 2026 Featured Links Our last episode of the season is where we ask all of the guests the same question and hear their response. This year we aske...

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

ontariomath.blogspot.com/2026/03/math...

links and help from @karencampe.bsky.social @howiehua.bsky.social @veganjackson.bsky.social and more #MathChat #MTBoS #iTeachMath

08.03.2026 16:45 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 1
Square root waves and logistic waves

Square root waves and logistic waves

Square root waves and logistic waves
πŸ†HitsπŸ† πŸ”₯HotπŸ”₯ πŸ’™MissedπŸ’™
πŸ–ΌοΈCurrent ExhibitionπŸ–ΌοΈ
#genart #art #geometric #processedart #mathsky

05.03.2026 22:03 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

This was fun. Looking forward to coming in person!

05.03.2026 20:12 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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[New Podcast] This is our last episode of the season where we asked all of our guests advice about engaging students. Featuring @realjmitchell.bsky.social @pwharris.bsky.social @cluzniak.bsky.social @themathguru.bsky.social &more
Listen here:

talks.oame.on.ca/season-8

#MathChat #MTBoS #iTeachMath

04.03.2026 01:45 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1
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[New Post] Ontario Math Links - My favourite #math related links from this week:

ontariomath.blogspot.com/2026/02/math...

Link and help from @standupmaths.bsky.social @robertkaplinsky.com @mathsjem.bsky.social @howiehua.bsky.social @mathspadnicola.bsky.social #MathChat #MTBoS #iTeachMath

01.03.2026 18:19 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
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#mathstoday

27.02.2026 16:49 πŸ‘ 15 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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If your students are learning about perpendicular lines, try out this Open Middle problem from Andy Schwen with them: www.openmiddle.com/perpendi...

27.02.2026 23:43 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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[New Post] Ontario Math Links - My favourite #math related links from this week:

ontariomath.blogspot.com/2026/02/math...

Links and help from @howiehua.bsky.social @theericklee.bsky.social @curiouspolymath.bsky.social @teacher2teacher.bsky.social #MathChat #MTBoS #iTeachMath

22.02.2026 17:40 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
A warmup question with four questions about slope and average rate of change.

A warmup question with four questions about slope and average rate of change.

A warm-up question with two different simplifying fractions questions. One "mild" and one "spicy" (a compound fraction).

A warm-up question with two different simplifying fractions questions. One "mild" and one "spicy" (a compound fraction).

Students sketch three different functions each is discontinuous at x = 1 but each has a different type of discontinuity.

Students sketch three different functions each is discontinuous at x = 1 but each has a different type of discontinuity.

A few warm-up questions from this week in my high school Calculus class. I start each day with a question. Sometimes for review/retrieval, sometimes to launch the day's discussion and sometimes for practice/consolidation. #ITeachMath #MathsToday

20.02.2026 20:55 πŸ‘ 17 πŸ” 3 πŸ’¬ 3 πŸ“Œ 0
The complex geometry of Islamic design - Eric Broug
The complex geometry of Islamic design - Eric Broug YouTube video by TED-Ed

#Mathsky
youtube.com/watch?v=pg1N...

21.02.2026 01:06 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Easel paper reads, "The answer is 25 stickers. What is the question?" Beneath, students have submitted answers on sticky notes.

Easel paper reads, "The answer is 25 stickers. What is the question?" Beneath, students have submitted answers on sticky notes.

A change in perspective can make all the difference!

T Kathy Minas (themathcollective on IG) mixes it up by giving the answer first – and asking learners for the question:

www.instagram.com/p/DO1o9bSEmr9/

#MTBoS

15.02.2026 17:40 πŸ‘ 1 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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[New Post] Ontario Math Links - My favourite #math related links from this week:

ontariomath.blogspot.com/2026/02/math...

Links and help from @colleenyoung.bsky.social @karencampe.bsky.social @alicekeeler.com @howiehua.bsky.social @johngolden.bsky.social and more
#MathChat #MTBoS #iTeachMath

15.02.2026 17:47 πŸ‘ 6 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1
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How to visually approximate square roots

11.02.2026 21:21 πŸ‘ 26 πŸ” 8 πŸ’¬ 2 πŸ“Œ 2
Preview
Creative Valentine's Day Maths Resources and Activities Explore creative Valentine's Day ideas and resources, perfect for math lovers, including cards, puzzles, and unique activities!

Valentine's cards for mathsy friends?!
colleenyoung.org/2026/02/08/f...

13.02.2026 17:53 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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I created a Google Sheets template to play Connect Four.
It allows you to create quiz cards and students earn their next move by answering the question.

Google Sheets: Play Connect 4

alicekeeler.com/2019/05/30/g...

#GoogleEDU #GoogleSheets #Gamification #EduSky

13.02.2026 23:01 πŸ‘ 4 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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[New Post] Ontario Math Links - My favourite #math related links from this week:

ontariomath.blogspot.com/2026/02/math...

Links and help from @howiehua.bsky.social @edutopia.org @murrayh83.bsky.social @histoftech.bsky.social and more #MathChat #MTBoS #iTeachMath

08.02.2026 17:14 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
Four images are shown. The top-left image shows a single flower made with 21st Century Pattern Blocks: a central hexagon composed of alternating kites and darts, which is then surrounded by six gray darts and six blue rhombuses. The top-right image shows six of these flowers arranged in a circle, leaving an empty, flower-shaped space in the center. The bottom two images show the outlines corresponding to the designs above.

Four images are shown. The top-left image shows a single flower made with 21st Century Pattern Blocks: a central hexagon composed of alternating kites and darts, which is then surrounded by six gray darts and six blue rhombuses. The top-right image shows six of these flowers arranged in a circle, leaving an empty, flower-shaped space in the center. The bottom two images show the outlines corresponding to the designs above.

Pattern block play! #21CenturyPB #iTeachMath

06.02.2026 18:52 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
Gladys Mae West obituary: mathematician who pioneered GPS technology She made key contributions to US cold-war science despite facing huge barriers as a Black woman.

No joke: I got angry hate mail today for writing an obituary of a Black woman scientistβ€”because the person felt she did didn’t deserve the recognition.

Which just makes me want to share it again: www.nature.com/articles/d41...

06.02.2026 09:09 πŸ‘ 47157 πŸ” 19330 πŸ’¬ 1352 πŸ“Œ 795
1-Minute Read. Teaching Strategies. Five Math Procedures To Help Students Learn From Their Mistakes. By Andrea Tamayo

1-Minute Read. Teaching Strategies. Five Math Procedures To Help Students Learn From Their Mistakes. By Andrea Tamayo

In math, learning from mistakes can help students solidify a formula, drive home a complex concept, or prepare them for future assessments.

But this will only happen if students learn to value mistakes.

Here is one strategy math teacher Emma Chiappetta uses to help students embrace errors.

🧡 1/6

06.02.2026 01:28 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Sign in - Google Accounts

"The Counter" February newsletter is out!
Highlights:
@ilanahorn.bsky.social "Mathematics Education at the End of the World", @davidpetro314.bsky.social OAMETalks on the OAME2026 conference & Michael Frankfort on Learning (Dis)abilities
sites.google.com/oame.on.ca/n...
#mtbos #mathed #onted

03.02.2026 18:39 πŸ‘ 1 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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[New Podcast] It's the
@oamecounts.bsky.social #OAME2026 Day 2preview. Featuring Dr. Pamela Seda @cluzniak.bsky.social Marian Small & Ian VanderBurgh. Listen here:

talks.oame.on.ca/season-8

Check out all the
@oamelearns.bsky.social conference info at oame2026.ca
#MathChat #MTBoS #iTeachMath

03.02.2026 19:04 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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[New Podcast] It's the @oamecounts.bsky.social #OAME2026 preview #2. Featuring @howiehua.bsky.social and Ron Lancaster. Listen here:

talks.oame.on.ca/season-8

Check out all the @oamelearns.bsky.social conference info at oame2026.ca
#MathChat #MTBoS #iTeachMath #MathSky

02.02.2026 15:53 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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[New Podcast] It's the @oamecounts.bsky.social #OAME2026 Day 1 preview. Featuring @pwharris.bsky.social Alex Lawson and Cathy Marks Krpan Listen here:

talks.oame.on.ca/season-8

Check out all the @oamelearns.bsky.social conference info at oame2026.ca
#MathChat #MTBoS #iTeachMath #MathSky

02.02.2026 01:43 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
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[New Post] Ontario Math Links - My favourite #math related links from this week:

ontariomath.blogspot.com/2026/01/math...

links and help from @edutopia.org @howiehua.bsky.social @murrayh83.bsky.social and more #MathChat #MTBoS #iTeachMath

01.02.2026 17:42 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
This image shows snowflake designs arranged in a 4 by 4 grid, with the center four squares merged to highlight a larger design. It features 13 unique snowflake designs created by combining 21st Century Pattern Blocks, Deci-blocks, Pattern Blocks, and Cuisenaire rods.

This image shows snowflake designs arranged in a 4 by 4 grid, with the center four squares merged to highlight a larger design. It features 13 unique snowflake designs created by combining 21st Century Pattern Blocks, Deci-blocks, Pattern Blocks, and Cuisenaire rods.

Looking back at the snowflake designs created in January! #21CenturyPB #PatternBlocks #CuisenaireRods #iTeachMath

30.01.2026 18:46 πŸ‘ 20 πŸ” 4 πŸ’¬ 2 πŸ“Œ 0
Preview
Helping Students Learn the Art of Trying in Math These four classroom shifts can make academic risk-taking feel safer, clearer, and more worthwhile for middle school students.

By explicitly talking to students about what trying in the classroom means, you can help them build the independence and resilience they need to tackle problems within their lessons and beyond. πŸ’«

#MathSky #ITeachMath #EduSky

28.01.2026 16:17 πŸ‘ 3 πŸ” 2 πŸ’¬ 1 πŸ“Œ 1

That would be a cool use of tech :-)

27.01.2026 04:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Tracker Quick Start
Tracker Quick Start YouTube video by Douglas Brown

Free open source software, Tracker, that lets you upload videos of moving objects&easily move frame by frame to mark the object's motion. Perfect for both #physics & #math

opensourcephysics.github.io/tracker-webs...

#MathChat #MTBoS #iTeachMath #ProjectileMotion

www.youtube.com/watch?v=n4Eq...

26.01.2026 23:52 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

oops, next time I will pay attention :-)

fixed, Thanks

25.01.2026 17:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0