https://exploremtbos.wordpress.com/

The Global Math Department is a community of math teachers on the Internet. We communicate via Twitter and blogs so we use the nickname Math Twitter Blogosphere (MTBoS). First and foremost it’s a support group for teachers in year 0 to 50 (preservice to retired!). Over time, this diverse group has grown in number and in scope of activities. We’ve built resources, curricula, websites, and co-authored a book. We run online workshop sessions, problem-solving groups, and a weekly “department meeting” via webinar. Our online connections have even spilled over into “real life”—we have an annual conference called Twitter Math Camp.