Saturday is the best day of the week because there is so much to do. But what happens when it rains? Big sister Matilda shows her reluctant little sister Clemmie that there's plenty to do outside on a rainy day, from jumping in puddles to catching raindrops in your mouth. It's all fun and games until the sun starts to peek through and Matilda decides to give Clemmie's red birthday balloon to the rainbow, much to her sister's dismay. The comic-book format of this easy reader requires children to read both the pictures and the words that appear in dialogue balloons in a gently humorous story depicting a sibling relationship. (Ages 5-7)