Sum - Simple Maths Puzzle - How fast can you add two numbers?
Litnerd - The Pixar for education, reading program for K-5 schools
Griddition - Griddition is a challenging numbers puzzle where you must fill a grid with numbers, Sudoku-style.
COOLPHABETS - Helping kids around the world learn their native alphabets.
NumberDrop - A uniquely challenging math puzzle game.
Breadcrumb LMS - Enabling children to explore and learn on their own