Caroline Kennedy, Kenneth Branagh and Vanessa Williams help introduce young children to the beauty of a poem, reciting works by A.A. Milne, Sara Coleridge, Eliza Lee Follen and Ann and Jane Taylor, in new installments of Disney Junior’s short-form series “A Poem Is…,” MONDAY, APRIL 25 – FRIDAY, APRIL 29 (9:55 a.m., ET/PT) during National Poetry Month. Previously announced poetry readers are Jennifer Garner, Katie Holmes, Whoopi Goldberg and Alfred Molina.