Sunny Makes Her Case by Jennifer L. Holm & Matthew Holm

Sunny is starting to understand the ins and outs of middle school. Sunny's never had a problem with arguing. Some of the debates are fun ones: What candy is the best? Is peanut butter a force for evil or a force for good? But when the debate club starts to be a success and the topics get harder, Sunny realizes she won't just be able to talk her way into winning... she'll have to make her case!