Even monsters have to go to bed! That's the charming premise of this math-oriented story. Readers will exercise their knowledge of numbers as they follow along with the easy-to-understand text. They'll read how these ten silly monsters need to brush their colorful spots, scrub their stinky feet, and tuck in their not-so-terrible tails as they get ready to snooze. Each page offers a chance to practice counting, while learning what these cute characters have to do next. A concluding question offers an opportunity for assessment.