| Ina cdr edition (Pebble Plus, July 1, 2008), cover price $39.86
| Ina cdr edition (Pebble Plus, July 1, 2008), cover price $30.65
| Pebble Plus, January 1, 2005, cover price $7.29 | About this edition:
A digital solution for your classroom with features created with teachers and students in mind: • Perpetual license • 24 hour, 7 days a week access • No limit to the number of students accessing one title at a time • Provides a School to Home connection wherever internet is available • Easy to use • Ability to turn audio on and off • Words highlighted to match audio Provides information on the physical characteristics, behavior, and habits of the prehistoric animal known as the sabertooth cat.
| Pebble Plus, January 1, 2005, cover price $25.99 | About this edition:
ntroduces the physical characteristics, habitat, and behavior of meat-eating saber-toothed tigers.