18 months & up. Teach your children the importance of cleaning up with this wonderful Toddler Tools® Bright Color Board Books - Learning About Clean Up Time. Children will enjoy reading about working together with their friends to tidy up the classroom after activities. This board book features rhythmic language and delightful illustrations to help little ones learn. Parents and caregivers are provided with practical ideas for daily times and transitions. This book contains thick pages that are easy for smaller hands to turn.