Fisher-Price Laugh and Learn Smart Stages Sis is a cuddly and smart first friend for your baby. As your baby explores and plays, Sis will introduce first words, body parts, colours and more, making learning super fun and engaging. And because every baby develops at their own pace, Smart Stages technology allows you to select the stage that's best for your little learner. In each level, Sis offers a variety of developmentally appropriate songs, sounds and phrases - just slide the switch to select a level. At first level, explore, babies can press her hands, foot, heart, nose or ear to hear more than 100 first words, the alphabet and different colours and also discover that their actions make something fun happen (cause and effect). Next, Sis will encourage little ones to count along and identify different parts of the body with fun and rewarding phrases. Then, at third level, babies can continue the learning fun by playing pretend with their good pal Sis, singing along to fun songs and expanding their vocabulary.