EngQuest, an initiative of Engineers Australia, provides an exciting, non-competitive way for students to participate in free, fun and educational engineering activities involving mathematics, science and technology. This article provides a sample of one of the middle school activities in the program. The history of water wheels, and their use along with instructions for building a water wheel are provided. A list of materials, and important safety and conservation information are included, as well as aspects to be critiqued once students have constructed their wheel. The expected outcomes of this work will depend on the ages and abilities of the particular students.