Cathy Fosnot and Pam Harris are The Queens of Number Strings (or Problem Strings as Pam would call them).  I’m way too excited about the fact they are teaming up to do a one-day workshop all about using Problem Strings for Automaticity, Fluency, and Beyond.  If you’ve been doing number strings and want to go more in depth on how to use them in your classroom, I highly recommend going to this workshop.  Go to https://buildmathminds.com/159  to get links to items mentioned in the episode.