Math Problems for Problem Based Learning - Google Drive

https://docs.google.com/document/d/1pSs4kiq1wyj442kSiWiJFvoN6tVFb13mu59cXbmtwSk/edit

Sam Shah (@samjshah) created this Google Doc for people to suggest sites with rich tasks. It's a pretty good list and I've used several of these in my searches for tasks to use at the Algebra 1 level.