Rhyming verse from Brian P. Cleary presents the fictional Clip-Clop Elementary School''s celebration of "Onomatopoeia Day." Enthusiastic young students make their way from band room (Rattle! Boom! Twang!) to the gym (Whiff! Whack! Swish!) to the science lab (Hiss! Spurt! Ding!) and beyond. Brief back matter offers additional examples of onomatopoeias—words that imitate sounds.