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
Super simple, real-life example that shows how 2^0 =1. youtube.com/shorts/uFgnk... #mathteacher #edusky
February 13, 2026 at 2:30 PM
Super simple, real-life example that shows how 2^0 =1. youtube.com/shorts/uFgnk... #mathteacher #edusky
Quick scaffolded support for students who need it: Graspable Math whiteboard - here with finding distance in the coordinate plane. Link in description here: youtube.com/shorts/TN-8n... #MTBoS #ITeachMath #edusky #mathteacher
February 12, 2026 at 8:01 PM
Quick scaffolded support for students who need it: Graspable Math whiteboard - here with finding distance in the coordinate plane. Link in description here: youtube.com/shorts/TN-8n... #MTBoS #ITeachMath #edusky #mathteacher
Graspable Math whiteboard helps students with procedural fluency big time — without doing the thinking for them. Link in description here: youtube.com/shorts/SrI24... #MTBoS #ITeachMath #mathteacher #edusky
February 12, 2026 at 5:29 PM
Graspable Math whiteboard helps students with procedural fluency big time — without doing the thinking for them. Link in description here: youtube.com/shorts/SrI24... #MTBoS #ITeachMath #mathteacher #edusky
Math Teachers: Graspable Math whiteboard is a powerful tool to help students work with arithmetic & algebraic expressions. Shown here with rationalizing denominators. Link in description here: youtube.com/shorts/YMvlN... #MTBoS #ITeachMath #edusky #mathteacher
February 12, 2026 at 3:35 PM
Math Teachers: Graspable Math whiteboard is a powerful tool to help students work with arithmetic & algebraic expressions. Shown here with rationalizing denominators. Link in description here: youtube.com/shorts/YMvlN... #MTBoS #ITeachMath #edusky #mathteacher
Using simple 5th-grade logic to explain why e^(ln(x)) = x. youtube.com/shorts/xBKn5... #mathematics #edusky #mathteacher #MTBoS #ITeachMath
January 28, 2026 at 6:14 PM
Using simple 5th-grade logic to explain why e^(ln(x)) = x. youtube.com/shorts/xBKn5... #mathematics #edusky #mathteacher #MTBoS #ITeachMath
January 27, 2026 at 12:51 PM
Making sense of distributing a negative coefficient: youtube.com/shorts/-0_ud... #MTBoS #ITeachMath #mathteacher #EduSky
January 27, 2026 at 1:48 AM
Making sense of distributing a negative coefficient: youtube.com/shorts/-0_ud... #MTBoS #ITeachMath #mathteacher #EduSky
Circle, diameter, tangent, secant, & chord surprise 👀 youtube.com/shorts/FDS-c... & www.geogebra.org/m/a4W7Szmx #MTBoS #ITeachMath #mathteacher #edusky
January 23, 2026 at 2:36 PM
Circle, diameter, tangent, secant, & chord surprise 👀 youtube.com/shorts/FDS-c... & www.geogebra.org/m/a4W7Szmx #MTBoS #ITeachMath #mathteacher #edusky
Cylinder surface area. If seeing is believing 👀 Links: www.geogebra.org/m/rCxXxFhE & an Open Middle exercise: www.geogebra.org/m/wkcgyxex & youtube.com/shorts/hX5Oe... #MTBoS #ITeachMath #mathteacher #edusky
January 22, 2026 at 5:49 PM
Cylinder surface area. If seeing is believing 👀 Links: www.geogebra.org/m/rCxXxFhE & an Open Middle exercise: www.geogebra.org/m/wkcgyxex & youtube.com/shorts/hX5Oe... #MTBoS #ITeachMath #mathteacher #edusky
Making sense with adding expressions in #algebra. Shown here in Graspable Math’s whiteboard: activities.graspablemath.com/whiteboards/... & youtube.com/shorts/3S3P6... #mathteacher #edusky
January 22, 2026 at 5:38 PM
Making sense with adding expressions in #algebra. Shown here in Graspable Math’s whiteboard: activities.graspablemath.com/whiteboards/... & youtube.com/shorts/3S3P6... #mathteacher #edusky
No tech. Just paper. Pure simplicity. Here, an effective means for students to explore any polygon’s exterior angles. #mathematics #geometry #mathteacher #edusky
January 21, 2026 at 10:54 PM
No tech. Just paper. Pure simplicity. Here, an effective means for students to explore any polygon’s exterior angles. #mathematics #geometry #mathteacher #edusky
#math #teachers : Graspable Math’s whiteboard is an awesome, slick, easy-to-use interface to help support procedural fluency: activities.graspablemath.com/whiteboards/... & youtube.com/shorts/TwegF... #MTBoS #ITeachMath #mathteacher #edusky
January 21, 2026 at 6:49 PM
#math #teachers : Graspable Math’s whiteboard is an awesome, slick, easy-to-use interface to help support procedural fluency: activities.graspablemath.com/whiteboards/... & youtube.com/shorts/TwegF... #MTBoS #ITeachMath #mathteacher #edusky
Using tech to explore a special right triangle in a thinking classroom: geogebra.org/m/uvuxbqc6 & youtube.com/shorts/IQLC7... @btcthinks.bsky.social @peterliljedahl.bsky.social #MTBoS #iteachmath #mathteacher #edusky
January 20, 2026 at 6:32 PM
Using tech to explore a special right triangle in a thinking classroom: geogebra.org/m/uvuxbqc6 & youtube.com/shorts/IQLC7... @btcthinks.bsky.social @peterliljedahl.bsky.social #MTBoS #iteachmath #mathteacher #edusky
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