I posted a little while ago about the importance of representations in subtraction. Today, I’m sharing a followup video on how to extend that [...]
In a recent blog post I talked about the importance of starting from where things make sense. This may be one of the best ways to help your kids with math at [...]
Another video challenge to share, called Subtracting Reverses. Once again, a strange little mystery can motivate a ton of subtraction practice. The subtraction [...]
When you want a problem that won’t quit, it’s hard to beat Diffy Squares. This crazy little enigma has had more folks doodling squares and [...]
I just had an interesting lab session with a school district we’re working with this year. The teachers (K-2) want to extend the scope and dynamics of their [...]
This Pyramid Puzzle was recently featured in a post in Forbes about our Tiny Polka Dot campaign. Take two suits–that’s 22 cards, with 0 – 10 each [...]