Two twins are on the hunt for their missing ball and pen. Find out what happens in this hi-lo decodable chapter book for early readers. This book uses sequenced phonics skills and sight words to help developing readers. Original illustrations guide readers through the story. Author Cecilia Minden, PhD, a literacy consultant and former director of the Language and Literacy program at Harvard Graduate School of Education developed the specific format for this series. Features dyslexia-friendly font and accessible design to help meet the learning needs of all students.