Websites:
Dan Meyer blog.mrmeyer.com
101 Questions http://www.101qs.com/
Fawn Nguyen http://fawnnguyen.com/
Andrew Stadel estimation180
Open Middle http://www.openmiddle.com/
Mathblogging http://www.mathblogging.org/
Mathalicious http://www.mathalicious.com/
MathArguments180 http://matharguments180.blogspot.com/
eGFI http://teachers.egfi-k12.org/category/activities/grades-6-8-activities/
2048 http://gabrielecirulli.github.io/2048/
Illustrative Mathematics https://www.illustrativemathematics.org/
NCTM Illuminations http://illuminations.nctm.org/
MathShell http://map.mathshell.org/materials/lessons.php
Minnesota Department of Education Assessment page http://www.mnstateassessments.org/
MathLab 