Igor Kokcharov, Leslie Green, and hundred other volonteers as described at https://www.aplusclick.org/about.htm
Aplusclick Math and Logic Problems
HundrED has not validated this innovation
Why did you create this innovation?
When I was a young boy, I studied mathematics in school and also on my own using Martin Gardner's puzzle books. Now, as an adult, I am eager to help children throughout the world who are in the same position that I was in as a child to discover interesting, practical, and challenging math and logic puzzles.
How does your innovation work in practice?
A+ Click helps students become problem solvers. No fees, no ads, no calculators, and no sign in. The website features a graduated set of 10,000+ challenging problems for students in grades one through twelve, starting from the very simple to the extremely difficult. The questions are based on the Common Core Standards in Math and go beyond by adding hundreds of meaningful practical problems and brainteasers.
How has it been spreading?
If I want to try it, what should I do?
Just go on www.aplusclick.org It is free