companies were buying extensive amounts of iPads: 90% of Fortune 500 companies were deploying or testing iPads in 2012 according to Mubaloo, and tablet adoption have grown by almost 40% in 2016 according to a report published by Javelin Strategy & Research.
i-Ready.com from Curriculum Associates, is a great K-8 adaptive assessment with engaging content.
Dreambox.com is a K-3 game-based adaptive math product.
ST Math from MIND Research Institute is a visual game-based approach used with great results in over 1,200 schools; ST Math is now available on iPad. They are launching their Seattle Math Initiative this Wednesday
Mangahigh.com is a games-based online math resource that hosts some 70 million math questions answered per month. Check out Tangled Web—a complementary angles game or watch a video.
ReasoningMind.com, based on the Russian curriculum with a pretty good adaptive engine and a lot of support from the Hoglund Foundation.
CK12.com, famous for dozens of free math and science textbooks, is now an OER object library. FlexMath.org is becoming a very cool adaptive product—stay tuned for more.
Hippocampus has solid high school math and science content. NROCmath.org previews an exciting developmental math sequence.