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 Measuring shows the kinds of things people measure and the tools that tell how long, how heavy, how far, how tall, how fast, how much, and how hot.