MathIsFun Times Table - Learn Your Multiplication Tables
GCompris - Educational Game for Children 2 to 10 years old.
Tux Paint - Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, preschool and K-6).
I Know It - "I Know It" is an online game for practicing primary-level math concepts.
Akribian - Akribian turns children into Mathemagicians with their new iOS app, Count on me!
Kid Pix - Kid Pix is a bitmap drawing program aimed at children.