Games to build skills
Get flash to fully experience Pearltrees
Directions: Travel around the world by answering math problems. The journey begins and ends in London, and has stops in 30 cities along the way. To board the plane to each new city, you must answer a math problem correctly. If you get a problem wrong, you have "missed your flight". Miss three flights and the game is over. To begin: Check the skills you want to practice, or choose a predefined skill set from the Combinations column.