Simple rhyming words, such as PUP and UP, are stacked one over the other in large capitals, so that readers see that 'up' is contained in the word 'pup.' Sentences using these words are accompanied by humorous illustrations to complete the playful reading lesson. Pairs of rhyming words are introduced and used in simple sentences, such as 'Day. Play. We play all day. Night. Fight. We fight all night.'