At Wesminster Schools of Augusta, Georgia, they’ve been inventing before it was cool. This year’s Invention Convention, which goes back more than two decades, yielded creations from 37 fourth-graders. The goal is to address real-world problems: Anabelle Wilkes and her father came up with “K 9 Lives,” a pet food that can be eaten by both dogs and cats so that neither gets sick when eating the other’s food. Patrick Andrew Joiner’s “Wolverine Gloves 5,000” helps people carry large quantities of leaves or pine straw. Teacher Virginia Shelley told the Augusta Chronicle, “There’s no doubt this is the highlight of their year.