This Calculating Accelerator Set by Junior Learning will help you fast track your calculating skills with the help of Ben the Bee and the Smart Tray! This Calculating Accelerator Set by Junior Learning will help you fast track your calculating skills with the help of Ben the Bee and the Smart Tray! Ages 5-7. Improve calculating skills involving the four operations. Visual math used throughout. Activities begin with simple tasks of addition and subtraction. Covers numbers and calculations from 1 – 20. 25 activity cards.\r\nFor use with Smart Tray – sold separately.\r\nAge: 6+ years