@CNN: Bob Dorough, whose catchy “Schoolhouse Rock” tunes taught kids grammar and math, has died at age 94. https://t.co/VM0qrO4ck5 https://t.co/Mp3XQhSOQ3

@CNN: Bob Dorough, whose catchy “Schoolhouse Rock” tunes taught kids grammar and math, has died at age 94. https://t.co/VM0qrO4ck5 https://t.co/Mp3XQhSOQ3