Unique site allows for exploration of multiple lessons, while the check tool allows students to evaluate credibility of news.
Planboard is an organizational tool (website and app) for lesson planning and for tracking standards coverage.
Geoguessr is an addictive puzzler (with version on the web as well as Android and iOS apps) that task students with guessing the location of Google Street View images from around the world.
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).
Minecraft is a sandbox game that can be adapted to fit nearly any objective or subject, with lessons lasting as short as one period or the entire year.
Showbie is an assignment, submission and grading tool for desktop and mobile devices, tuned to flipped and one-to-one computing classrooms.
Stick Pick is a classroom-management and -assessment app that takes the popsicle-stick-in-a-can concept digital and expands it to help teachers improve the way they ask questions in the classroom.