Math Pickle is an amazing online resource containing math puzzles, games a mini-competitions, organized by grade! This site is aimed at TEACHERS. It is not a site to set your students loose on to explore, it is designed to assist teachers with math instruction and offers fantastic puzzles to challenge students to us mathematical thinking and logic to solve.
The CK-12 Foundation is a California-based non-profit organization whose stated mission is to reduce the cost of, and increase access to, K-12 education in the United States and abroad. CK-12 provides free and customizable K-12 open educational resources aligned to state curriculum standards. The resource they have assembled online is phenomenal.
Their service comes up anytime one googles “online textbook”, and as such, teachers are likely to find some excellent content to overhaul or extend exsiting assignments and textbooks already being used.
Class Playground offers a number of online, free, digital math manipulatives that may prove valuable in our math classrooms. Algebra tiles, fraction circles, area, perimeter… it’s all there!!
I have just discovered an online source for digital math manipulatives. Need some Base-ten blocks on your Chromebook? A classroom timer? A spinner? Some dice? How about a thermometer?
There are also a number of math games there that look to be reasonably good!