$16.95 R2751 Lab Mice: The object of this cheese-chasing brainteaser is to connect the mice to their color of cheese by drawing pathways through the maze. None of the trails can intersect so it can become a challenge. But don't worry if you make a mistake, simply use the built in eraser on the dry erase marker to re-work your paths. Comes with 100 puzzles cards in 3 levels of difficulty. 2 dry erase markers and helpful instructions. Fun way to work on ocular motor skills, critical thinking and pencil control.