#1 NEW YORK TIMES BESTSELLER * Ms. Rachel brings her signature teaching style to her very first book! Children will practice more than 20 important milestones-including gestures and speech-and sing their favorite songs as they help Ms. Rachel find a special surprise just for them. Ms. Rachel is looking for something very special, and she needs your help finding it! Using educational techniques from her beloved YouTube channel and threading them into an interactive story, Ms. Rachel shows kids an...