Elmo and his mom love playing their favorite game together, especially on Mother's Day! Babies and toddlers will enjoy peeking beneath the easy-to-lift oversized flaps on every spread to join in the hide-and-seek fun. A great book to read for Mother's Day or any day!  Sesame Workshop, the nonprofit educational organization behind Sesame Street, aims to help kids grow smarter, stronger, and kinder through its many unique domestic and international initiatives. These projects cover a wide array of topics for families around the world. Sesame Street is the most trusted name in early learning.