Key Words 1b: Look at This is part of the Key Words Reading Scheme Books published by Ladybird in the 1960s. These books help young children how to learn to read, by learning and recognizing sets of keywords. From research conducted into speech and writing patterns, it was learnt that just a small set of frequently used words account for a huge percentage of the main English vocabulary for practical use. Using this a basis, these books gradually introduce common words to young readers and repeat them frequently to reinforce the words in a child's memory.