Let's take a walk, baby! As Planet Junior gives priority to both the fun and learning of children this Laugh & Learn program is a fun way to learn new things. Smart Stages Learn with Sis Walker is the ideal companion for your growing child, with fun hands-on activities for young sitters and plenty of encouraging remarks and encouragement for those first few steps. Smart Stages learning content introduces the alphabet, shapes, colors, numbers, and even Spanish words as children grow and develop. As seated infants reach for and interact with the activities, and eventually pull up to stand and walk behind the walker, their little muscles receive a good exercise. As they learn how to activate the music and words by touching buttons or pushing the walker forward, babies are introduced to cause and effect. Fisher-Price Toys Online.