Collaborative Mathematics is a website I operated between 2012 and 2015.
The main goal of Collaborative Mathematics was to use video as a means of connecting a worldwide community of mathematical problem solvers. The site offers an assortment of puzzle videos and a library of user-submitted solutions.
Click here to visit CollaborativeMathematics
I believe that helping young people develop a productive attitude toward challenging problems may be the most important educational objective in the mathematics classroom.
The intended audience for Collaborative Mathematics was middle and high school mathematics teachers and students, and the primary goal of the project was to help cultivate in young people an attitude of creativity, resourcefulness, self-confidence, and perseverance in the face of challenging problems.