Spark a love of numbers – and build math confidence – with this Hot Dots set based on the global hit TV series Numberblocks! Kids use the Hot Dots Numberblocks pen to answer early math questions and receive immediate feedback, including audio, sounds, and music from the show. Includes Hot Dots pen and 50-page spiral bound workbook packed with Numberblocks math activities. Brilliant! Details:Multicolor8" x 9" x 2" package sizeIncludes pen with light and sounds50 page spiral-bound workbookFor ages 5 and up