Help your child master the reading skills necessary to succeed in the first grade. Simply review the questions and press the interactive Hot Dots Pen to an answer for immediate audio and visual feedback. Perfect for independent learning and extra practice. Pen requires 2 AAA batteries (not included). # Pieces In Set: 5 Learning Skill: Reading + Writing Power Source: Battery (not Included) Measurements: 9.2 Length/Inches, 8.2 Depth/Inches, 2 Height/Inches Base Material: 100% Paper Battery Size: Aaa Care: Wipe Clean Country of Origin: Imported