Tag: professional development

Equilateral Triangle Puzzle (original post)

At the start of the school year, I came across this tweet by @MathEqualsLove… This Week’s Puzzle: Equilateral Triangle. This puzzle is always a favorite! https://t.co/tPyH2w2spF #mtbos #iteachmath #teach180 #puzzlingclassroom pic.twitter.com/8Se6RJJepj — Sarah Carter (@mathequalslove) August 26, 2019 I loved the Equilateral Puzzle, so I finally got around to sharing it with teachers during a […]

The effect of great math teaching

Updated 5/6/2025: Added information about recent NCTQ report.   Teachers matter. Good teaching matters. In this week of Teacher Appreciation, I am reminded of an experience many years ago… After school one day, I wandered into the classroom of a new teacher to check how her day went. I saw this on her chalkboard… After […]