Fifty-five years ago, preschoolers were captivated by the TV performance of a fuzzy blue monster, two striped shirt-wearing best friends and a big yellow bird. Today, in the now-crowded field of ...

• The catchy songs on 'CoComelon' helped toddlers learn and feel comforted in everyday routines. • The show's diverse characters allow kids to see themselves and their families represented on screen. ...