Zearn

Innovative combo of live instruction and adaptive online math lessons
Bottom Line: It's a great balance of online lessons, in-person instruction, and instructional resources, all for free.
Tinkercad

Amazingly simple yet powerful online CAD tool turns kids into makers
Bottom Line: Full-featured site and app make iterative 3D design accessible, social, and relevant.
Tract

Student creators show what they know on video-based learning platform
Bottom Line: Teachers who want to encourage inquiry, PBL, and student-led lessons will find Tract has all the bases covered.
Google CS First

Middle school CS curriculum has stellar resources, room for creativity
Bottom Line: A high-quality introductory CS curriculum where students can be creative, collaborate with others, and express themselves, in the classroom or at home.
Along

Messaging tool helps classrooms forge and foster meaningful dialogue
Bottom Line: This tool opens up avenues for conversation and relationship building between teachers and students.
NaNoWriMo Young Writers Program

Wildly engaging contest turns students into novelists in 30 days
Bottom Line: A thoughtful adaptation of the famous and fun grown-up novel writing contest, NaNoWriMo Young Writers Program is brimming with advice and encouragement as well as classroom support.
Desmos

Powerful graphing calculator deepens understanding with visualization
Bottom Line: Desmos combines interactivity, visualization, personalization, and collaboration to deepen students' understanding of geometry and graphing concepts.
Facing History and Ourselves

A wealth of resources explore racism, prejudice, and anti-Semitism
Bottom Line: These valuable materials empower students to understand and address difficult ethical choices -- past and present.
Glose for Education

Interactive ebooks and web content make reading a social experience
Bottom Line: Build collective reading experiences to make challenging texts more approachable and get kids excited about books.
iCivics

Well-designed games, lessons can spice up your civics curriculum
Bottom Line: This game-based curriculum would be an excellent addition to any secondary social studies.