Developed in partnership with Jolly Learning, this card set is perfect for reinforcing lesson content. Students touch the interactive pen to a Hot Dot, and the Talking Hot Dots® Pen responds instantly to correct answers with a green light and positive reinforcement sounds. Incorrect answers receive a red light and a gentle wrong answer sound or phrase. Set includes 72 activities to encompass a range of topics covered by Jolly Grammar, including parts of speech, alphabet order, upper- and lowercase letters, plurals and tenses. Supplied in a cardboard storage case. Cards measure 9cm x 12.5cm.