![Sarah Carter on Twitter: "I'm celebrating the first day of Spring Break with a new blog post. I'm a big fan of this shape grid puzzle from Erich Friedman. https://t.co/0yMmeKTjRk #mtbos #iteachmath # Sarah Carter on Twitter: "I'm celebrating the first day of Spring Break with a new blog post. I'm a big fan of this shape grid puzzle from Erich Friedman. https://t.co/0yMmeKTjRk #mtbos #iteachmath #](https://pbs.twimg.com/media/EwTHhxxWUAAypmC.png)
Sarah Carter on Twitter: "I'm celebrating the first day of Spring Break with a new blog post. I'm a big fan of this shape grid puzzle from Erich Friedman. https://t.co/0yMmeKTjRk #mtbos #iteachmath #
![Sarah Carter on Twitter: "One of my favorite puzzle creators, Erich Friedman, took it upon himself to create a new set of puzzles just for my students. How awesome is that?!? These Sarah Carter on Twitter: "One of my favorite puzzle creators, Erich Friedman, took it upon himself to create a new set of puzzles just for my students. How awesome is that?!? These](https://pbs.twimg.com/media/FEgzT9KXoAEDT_j.jpg)
Sarah Carter on Twitter: "One of my favorite puzzle creators, Erich Friedman, took it upon himself to create a new set of puzzles just for my students. How awesome is that?!? These
![Erich Friedman is the top resource for math puzzles. He is prolific and reliably brilliant. Visit his Puzzle Palace and a… | Maths puzzles, Math challenge, Fun math Erich Friedman is the top resource for math puzzles. He is prolific and reliably brilliant. Visit his Puzzle Palace and a… | Maths puzzles, Math challenge, Fun math](https://i.pinimg.com/originals/e0/0c/db/e00cdbb38c2d4fb7c12403f5561452b9.jpg)