Tim Brzezinski
@tbrzezinski.bsky.social
MS & HS math teacher at ESUMS (New Haven, CT), independent #MathEd consultant, dad of 4 awesome boys; Views are my own. Isaiah 40:31
Making sense of radians. And π 🥧 youtube.com/shorts/8_9BW... & resources for teachers and students: drive.google.com/file/d/1YJJB...
#MTBoS #ITeachMath #mathteacher #edusky
#MTBoS #ITeachMath #mathteacher #edusky
January 16, 2026 at 5:08 PM
Making sense of radians. And π 🥧 youtube.com/shorts/8_9BW... & resources for teachers and students: drive.google.com/file/d/1YJJB...
#MTBoS #ITeachMath #mathteacher #edusky
#MTBoS #ITeachMath #mathteacher #edusky
Circle to triangle: What are the angles? 🤔 youtube.com/shorts/NUqQu... #math #maths #geometry #STEM #STEAM #mathfun #mathteacher #edusky
January 15, 2026 at 6:08 PM
Circle to triangle: What are the angles? 🤔 youtube.com/shorts/NUqQu... #math #maths #geometry #STEM #STEAM #mathfun #mathteacher #edusky
Right triangle angle trisector surprise! 👀 youtube.com/shorts/QxKNx... #MTBoS #ITeachMath #mathteacher #edusky
January 15, 2026 at 2:34 PM
Right triangle angle trisector surprise! 👀 youtube.com/shorts/QxKNx... #MTBoS #ITeachMath #mathteacher #edusky
Reflecting across 2 parallel lines is equivalent to a single translation by vector. Quick student exploration: www.geogebra.org/m/ta5npwq5 & youtube.com/shorts/nB35Y... @geogebra.org #MTBoS #ITeachMath #mathteacher #edusky
January 14, 2026 at 6:20 PM
Reflecting across 2 parallel lines is equivalent to a single translation by vector. Quick student exploration: www.geogebra.org/m/ta5npwq5 & youtube.com/shorts/nB35Y... @geogebra.org #MTBoS #ITeachMath #mathteacher #edusky
Working with distance in the coordinate plane conceptually using an @openmiddle.com theme: youtube.com/shorts/2fSHm... Resource link: www.geogebra.org/m/darjhqrc
@robertkaplinsky.com #MTBoS #ITeachMath #mathteacher #edusky
@robertkaplinsky.com #MTBoS #ITeachMath #mathteacher #edusky
January 13, 2026 at 6:52 PM
Working with distance in the coordinate plane conceptually using an @openmiddle.com theme: youtube.com/shorts/2fSHm... Resource link: www.geogebra.org/m/darjhqrc
@robertkaplinsky.com #MTBoS #ITeachMath #mathteacher #edusky
@robertkaplinsky.com #MTBoS #ITeachMath #mathteacher #edusky
Composing 2 line reflections about 2 intersecting lines is equivalent to a rotation of double the angle between those 2 lines about their point of intersection: youtube.com/shorts/JmoFo... & www.geogebra.org/m/schvdg2p #MTBoS #ITeachMath #edusky #mathteacher
January 13, 2026 at 3:08 PM
Composing 2 line reflections about 2 intersecting lines is equivalent to a rotation of double the angle between those 2 lines about their point of intersection: youtube.com/shorts/JmoFo... & www.geogebra.org/m/schvdg2p #MTBoS #ITeachMath #edusky #mathteacher
Exploring line reflections youtube.com/shorts/-15uU... & www.geogebra.org/m/wzkbnnzg
January 12, 2026 at 4:59 PM
Exploring line reflections youtube.com/shorts/-15uU... & www.geogebra.org/m/wzkbnnzg
Reposted by Tim Brzezinski
[New Post] Ontario Math Links - My favourite #math related links from this week:
ontariomath.blogspot.com/2026/01/math...
Links and help from @karencampe.bsky.social @tbrzezinski.bsky.social @amplifyeducation.bsky.social @ahestenes.bsky.social @priy45hah.bsky.social
#MathChat #MTBoS #iTeachMath
ontariomath.blogspot.com/2026/01/math...
Links and help from @karencampe.bsky.social @tbrzezinski.bsky.social @amplifyeducation.bsky.social @ahestenes.bsky.social @priy45hah.bsky.social
#MathChat #MTBoS #iTeachMath
Math Links for Week Ending Jan 9th, 2025
Featured Links I have been a Desmos Fellow (now Amplify Fellow) since 2018 and it has given me resources, insight and inspiration. And don't...
ontariomath.blogspot.com
January 11, 2026 at 5:46 PM
[New Post] Ontario Math Links - My favourite #math related links from this week:
ontariomath.blogspot.com/2026/01/math...
Links and help from @karencampe.bsky.social @tbrzezinski.bsky.social @amplifyeducation.bsky.social @ahestenes.bsky.social @priy45hah.bsky.social
#MathChat #MTBoS #iTeachMath
ontariomath.blogspot.com/2026/01/math...
Links and help from @karencampe.bsky.social @tbrzezinski.bsky.social @amplifyeducation.bsky.social @ahestenes.bsky.social @priy45hah.bsky.social
#MathChat #MTBoS #iTeachMath
Triangle with 3 right angles: youtube.com/shorts/prOXv... & www.geogebra.org/m/qfb6cvfv #mathteacher #edusky
January 11, 2026 at 2:51 PM
Triangle with 3 right angles: youtube.com/shorts/prOXv... & www.geogebra.org/m/qfb6cvfv #mathteacher #edusky
Some polygon angle explorations for a thinking classroom: www.geogebra.org/m/qsxbwtct & youtube.com/shorts/iV_jp... @peterliljedahl.bsky.social @btcthinks.bsky.social @geogebra.org #MTBoS #ITeachMath #mathteacher #EduSky
January 10, 2026 at 6:07 PM
Some polygon angle explorations for a thinking classroom: www.geogebra.org/m/qsxbwtct & youtube.com/shorts/iV_jp... @peterliljedahl.bsky.social @btcthinks.bsky.social @geogebra.org #MTBoS #ITeachMath #mathteacher #EduSky
Circle to right triangle: by peeling. youtube.com/shorts/la3iU... #MTBoS #ITeachMath #mathteacher #EduSky
January 10, 2026 at 2:52 PM
Circle to right triangle: by peeling. youtube.com/shorts/la3iU... #MTBoS #ITeachMath #mathteacher #EduSky
Exploring rotations in the coordinate plane: drive.google.com/file/d/1maRA... & youtube.com/shorts/g31aC... @desmos.com #MTBoS #ITeachMath #edusky #mathteacher
January 9, 2026 at 5:40 PM
Exploring rotations in the coordinate plane: drive.google.com/file/d/1maRA... & youtube.com/shorts/g31aC... @desmos.com #MTBoS #ITeachMath #edusky #mathteacher
Exploring translation by vector: youtube.com/shorts/Q9zFn... & www.geogebra.org/m/axnnavdz #edusky #mathteacher
January 9, 2026 at 5:27 PM
Exploring translation by vector: youtube.com/shorts/Q9zFn... & www.geogebra.org/m/axnnavdz #edusky #mathteacher
Reposted by Tim Brzezinski
Dine and Discuss is up and running in January next year! JAN 14, 5:30p - 8:00p, at EastConn in Hampton, CT. We hope to see you there! More info: atomicmath.org.
December 19, 2025 at 6:14 PM
Dine and Discuss is up and running in January next year! JAN 14, 5:30p - 8:00p, at EastConn in Hampton, CT. We hope to see you there! More info: atomicmath.org.
Reposted by Tim Brzezinski
We are looking forward to learning about mathematics through storytelling from featured speaker Jamil Siddiqui at #ATMNE25. Check out all of the fantastic sessions and register at atmim.net/event-5937758 @atmim.bsky.social
October 1, 2025 at 1:12 PM
We are looking forward to learning about mathematics through storytelling from featured speaker Jamil Siddiqui at #ATMNE25. Check out all of the fantastic sessions and register at atmim.net/event-5937758 @atmim.bsky.social
Getting ready for back-to-school night at ESUMS
September 24, 2025 at 4:48 PM
Getting ready for back-to-school night at ESUMS
Reposted by Tim Brzezinski
The #ATMNE25 fall conference has an outstanding lineup of speakers, including featured speaker Amy Chang. You won’t want to miss this conference! Check out the full program and register at atmim.net/event-5937758. @atmim.bsky.social @atmnemath.bsky.social
September 19, 2025 at 6:47 PM
The #ATMNE25 fall conference has an outstanding lineup of speakers, including featured speaker Amy Chang. You won’t want to miss this conference! Check out the full program and register at atmim.net/event-5937758. @atmim.bsky.social @atmnemath.bsky.social
Happy 3^2 / 4^2 / 5^2 Day! youtube.com/shorts/2arB4... #edusky
September 16, 2025 at 8:49 PM
Happy 3^2 / 4^2 / 5^2 Day! youtube.com/shorts/2arB4... #edusky
Welcome to v 5.0 of the BTC Auto Grading Rubric: OLD BUGS ARE GONE & lots of slick new features have been added, T/Y to Melisa McCain's creative genius! More: youtu.be/_KPXVp7fp-k @peterliljedahl.bsky.social @btcthinks.bsky.social #mathteacher #btcthinks #edusky
September 16, 2025 at 5:47 PM
Welcome to v 5.0 of the BTC Auto Grading Rubric: OLD BUGS ARE GONE & lots of slick new features have been added, T/Y to Melisa McCain's creative genius! More: youtu.be/_KPXVp7fp-k @peterliljedahl.bsky.social @btcthinks.bsky.social #mathteacher #btcthinks #edusky
Reposted by Tim Brzezinski
#ATMNE25 has an awesome lineup of speakers this year! If you haven't registered yet, there's still time! OCT 30 - 31 in Marlborough, MA. Register here: atmim.wildapricot.org #mathteacher #mathteachers #edusky @atmnemath.bsky.social
September 15, 2025 at 3:11 PM
#ATMNE25 has an awesome lineup of speakers this year! If you haven't registered yet, there's still time! OCT 30 - 31 in Marlborough, MA. Register here: atmim.wildapricot.org #mathteacher #mathteachers #edusky @atmnemath.bsky.social
Reposted by Tim Brzezinski
Hello #BlueSky & #edusky world! We're a little late to the game here, but we'd love to make our presence known here. We're ATOMIC (Associated Teachers of Mathematics in CT), and would love to connect with other #math & #STEM educators & organizations here!
Sincerely,
The ATOMIC Board 🙂
Sincerely,
The ATOMIC Board 🙂
September 15, 2025 at 3:09 PM
Temperature logic? 🤔
August 16, 2025 at 1:44 PM
Temperature logic? 🤔
Math teachers: When it comes to fostering procedural fluency through a conceptual lens, Graspable Math is an absolute game changer! youtube.com/shorts/5N1nJ...
August 4, 2025 at 1:15 PM
Math teachers: When it comes to fostering procedural fluency through a conceptual lens, Graspable Math is an absolute game changer! youtube.com/shorts/5N1nJ...
Period of parent cosine and tangent functions: youtube.com/shorts/ybE9U... & youtube.com/shorts/F4Jdl... #mathteacher #edusky
August 3, 2025 at 2:00 PM
Period of parent cosine and tangent functions: youtube.com/shorts/ybE9U... & youtube.com/shorts/F4Jdl... #mathteacher #edusky
Triangle + 2 squares surprise: youtube.com/shorts/1EY-_...
August 2, 2025 at 1:53 PM
Triangle + 2 squares surprise: youtube.com/shorts/1EY-_...