MTBOS or #MTBOS
You may notice online resources with MTBOS or #MTBOS. This stands for MathTwitterBlogosphere. That’s a funny name for an informal network of math teachers who have found community together on the internet. Many diverse and wonderful materials, resources, ideas and suggestions are coming from folks who identify as part of or are connected to MTBOS. This search engine is one way to get started exploring resources connected by MTBOS.