Author: Yelena

Book Update – Now Shipping

Last Monday, just 7 days ago, two things happened. Our area of North Carolina got hit with a late winter storm (hopefully, the last one for the season) and Maria Droujkova’s interview appeared in The Atlantic. Guess which of these

Posted in Newsletter

Fluency or Complexity

doubling towers

I am very proud of my 6-year old and the math discoveries he makes. Two days ago he came up with a proof that zero is an even number. Yesterday he built something he called “a square that has volume”

Posted in Grow

Math Goggles #11 – Just Listen

Moby Snoodles Math Googles

All the Math Goggles challenges so far had to do with noticing math with your eyes. But for this week’s challenge, let’s try to just listen. Let’s listen to the math in what our children talk about. I don’t mean

Posted in Grow

What Would You Rather Have – Commutative Property Game

Is 2*3 different from 3*2? My answer used to be “But of course! Don’t you know the commutative property?” Now, after following Malke Rosenfeld’s exploration of multiplication, I answer it with a lot more non-committal “it depends“. And I notice

Posted in Grow