@CNN: Bob Dorough, whose catchy “Schoolhouse Rock” tunes taught kids grammar and math, has died at age 94. https://t.co/CluCrVldpF https://t.co/Ka6elQb66Q

@CNN: Bob Dorough, whose catchy “Schoolhouse Rock” tunes taught kids grammar and math, has died at age 94. https://t.co/CluCrVldpF https://t.co/Ka6elQb66Q