Reader Rabbit 1st Grade Capers On Cloud Nine  [OLD VERSION] (Ages 5 - 7) Take a Wild Ride Through Cloud Nine with Reader Rabbit! With fun activities in spelling, math, vocabulary, and science, your forecast calls for a 100% chance of learning fun! Auto-adjusting skill levels. Progress tracking reports. Help is always available Windows 7, Vista, XP | Macintosh OS 8.6-9.2, OS X compatible