The SqueakCMI Library Collection has a category of Puzzles using Etoys/Squeak. You will find interactive tangrams, tetraminoes, pentaminoes, and Sudoku puzzles to enjoy any time....
George Reese, Noemi Waight, Ji-Young Kim, and Cathy Olshefski presented the paper, "A Portrait of a Math Transitions Course: Providing Opportunities for Student Success" at the American Educational Research Association (AERA) annual conference....