Mia, Felix Fox and Bobby Beaver need to find a way to keep the school garden watered during a hot three-day holiday. By breaking the problem into smaller questions, experimenting with cotton strips, adjusting their design and repeatedly testing their ideas, they create a slow-watering system that keeps the plants healthy. A practical problem-solving story that teaches experimentation, teamwork, creative thinking, testing and improvement, and how big problems can often be solved through a series of smaller ideas.