Tim Brzezinski

Welcome to v 5.0 of the BTC auto-grading rubric: OLD BUGS ARE GONE & lots of slick new features have been added! Shout out & T/Y to @mccainm's for her creative genius re: making this possible. More: youtu.be/_KPXVp7fp-k. @pgliljedahl @BTCthinks #MTBoS #ITeachMath #btcthinks

[New Post] Ontario Math Links - My favourite #math related links from this week: ontariomath.blogspot.com/2026/05/math-l… Links and help from @edutopia @mathsjem @TimBrzezinski @howie_hua #MathChat #iTeachMath #MTBoS

Juggler juggling juggling jugglers.

Integrating technology in a thinking classroom. Here, exploring the conceptual meanings of trig ratios with a right triangle context through the lens of similarity. @BTCthinks @pgliljedahl #MTBoS #ITeachMath

Start of a #ThinkingClassroom thin slice in #geometry class yesterday. @pgliljedahl @BTCthinks #buildingthinkingclassrooms

Excited to facilitate "Integrating Technology in a 6-12 Thinking Classroom" w/ @pgliljedahl at #NCTMDEN26. Experience how tech can serve as an exploratory & coding tool, & leave w/tasks where tech can help foster fluency, enhance discovery, and provide hints and extensions!

Vertical angles theorem. @GraspableMath whiteboard link - see description in youtube.com/shorts/002P5H_… #MTBoS #ITeachMath

.@GraspableMath whiteboard: Supplementary angles resource. Link in description here: youtube.com/shorts/QsUIwua… #MTBoS #ITeachMath

Super simple, real-life example that shows how 2^0 =1. youtube.com/shorts/uFgnkkT…

Quick scaffolded support for students who need it: @GraspableMath whiteboard - here with finding distance in the coordinate plane. Link in description here: youtube.com/shorts/TN-8nwt… #MTBoS #ITeachMath

Math Ts: @GraspableMath whiteboard helps students with procedural fluency big time — without doing the thinking for them. Link in description here: youtube.com/shorts/SrI24LU… #MTBoS #ITeachMath #mathteacher

Math Teachers: @GraspableMath 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_d… #MTBoS #ITeachMath

Using simple 5th-grade logic to explain why e^(ln(x)) = x. youtube.com/shorts/xBKn568… #mathematics #mathteacher #MTBoS #ITeachMath

Isosceles triangle surprise 👀 youtube.com/shorts/9KIQ0fZ…

Making sense of distributing a negative coefficient: youtube.com/shorts/-0_udG8… #MTBoS #ITeachMath

[New Post] Ontario Math Links - My favourite #math related links from this week: ontariomath.blogspot.com/2026/01/math-l… links and help from @TimBrzezinski @howie_hua and more #MathChat #MTBoS #iTeachMath

Circle, diameter, tangent, secant, & chord surprise 👀 youtube.com/shorts/FDS-csT… & geogebra.org/m/a4W7Szmx @geogebra #MTBoS #ITeachMath

Cylinder surface area. If seeing is believing 👀 Links: geogebra.org/m/rCxXxFhE & an Open Middle exercise: geogebra.org/m/wkcgyxex & youtube.com/shorts/hX5Oe7y… @geogebra #MTBoS #ITeachMath

Making sense with adding expressions in #algebra. Shown here in @GraspableMath’s whiteboard: activities.graspablemath.com/whiteboards/new & youtube.com/shorts/3S3P6mx… #mathteacher #MTBoS #ITeachMath

No tech. Just paper. Pure simplicity. Here, an effective means for students to explore any polygon’s exterior angles. #mathematics #geometry