Can you turn the word cat into dog? Just change one letter at a time: cat-pat-pot-dot-dog! These activity pages help children learn how words are related to other words. Research shows that the best readers and writers see analogies between words they know, and those they are trying to decode or spell. Word Chains foster this strategy by having children build words from other words. Dictate the words to children, or have them solve the puzzles independently.