Knack Baby Sign Language: A Step-By-Step Guide To Communicating With Your Little One - Knack: Make It Easy

Few children can communicate effectively before eighteen months of age, but sign language can allow baby and parent to reduce the frustration up to a year earlier. With more than 450 full-color photos, text, and sidebars, Knack Baby Sign Language provides a user-friendly, efficient method to learn and teach a baby sign language.