DataClassroom helps teachers store, manipulate, and analyze data sets
Like Minecraft, this popular gaming platform can be used to teach and demonstrate specific skills, with careful planning and structured implementation.
Formative is a web-based student response and assessment tool for the flipped, BYOD, or 1-to-1 classroom.
Google Classroom helps teachers manage workflow and communication with their students (it's available as a website, an Android app, and an iOS app).
Khan Academy, a free website aimed at promoting self-paced instruction, houses thousands of academic videos that are baked into guided, adaptive instruction.
The site is divided into different sections, each focusing on a different area of math and different grade levels.