This IQ Plus set of shakers is designed to combine musical elements to the traditional game of Tic Tac Toe. Each of the nine wooden blocks in this shake set features both an X and an O on opposite sides, making it a fun engaging game for children to learn music with. For classroom use, teachers can create a variety of games for students to actively participate in while learning music together. · Made from environmentally friendly rubber wood with no sharp edges · Comes equipped with a wooden tray that will keep shakers organized in one place for easy storage · Suitable for children of all ages · Ideal for classroom use or just playing for fun at home