In this adventure, Ella finds herself in a place where everything is out of order. With the help of her dog, Period, Ella helps the Decimal family stay in order. She creates a place value chart and assigns chores to each of the 9 children in the family. The value or amount of work each child completes depends on which child has the number. Students learn about the number system, decimals, and place value. This book includes worksheets to reinforce concepts taught in the story.