Add & Subtract Zoobookoo is a great way to promote basic numeracy and literacy skills. Turning the cube book will reveal an array of numeracy and literacy activities. Learn about adding, subtracting, doubles, how to spell numbers and more! The ideal educational activity toy for Key Stage 1.With a tactile and fun design children of all ages will be intrigued and ready to learn! ZooBooKoo cubes have been created to give bitesize chunks of information to help recall and avoid overloading. Cubes are in a tactile format that intrigues all ages, as they turn it inside out the information just keeps flowing. Just like a good book – you cannot put them down! Great for use in the classroom, at home or on the move – infectious fun learning all the time. Cube dimensions 6cm x 6cm x 6cm. Age 5-7 years.