The document summarizes the Twitter activity of five educators: Aviva Dunsiger, Chris Wejr, Harold Blanco, Eric Sheninger, and George Couros. It describes how each educator uses Twitter to share educational resources, insights, and best practices. They discuss topics like assessment, leadership, technology integration, education policy, and student engagement. The document recommends following all five educators on Twitter to learn from their ideas and experiences in creating engaging, technology-driven learning environments.