Leapfrog Mr. Pencil’s Alphabet Backpack Leapfrog Mr. Pencil’s Alphabet Backpack is packed with 7 activities to teach letter names, letter sounds, letter writing, reading and even drawing animals! 26 removable letters are recognised by the bag as they are plugged into their puzzle spots and lett   Features Seven activities teach letter names, letter sounds, letter writing, reading and even drawing animals! 26 letter pieces plug into interactive puzzle spots to make the alphabet come alive Learn with Mr. Pencil as he teaches letter writing step by step.he in