Engaging children in authentic investigation opens the doors for them to gain deep conceptual understanding in science. As students engage in investigation, they experience the practices employed by scientists and engineers, as highlighted in the Next Generation Science Standards (Achieve Inc. 2013). They also begin to understand the nature of science as practitioners. Furthermore, inquiry approaches to teaching and learning lend themselves to the meaningful practice of mathematics, especially measurement and graphing, and may help to anchor students' exposure to engineering design and the use of technology. Inquiry provides teachers with a gateway to help children develop understanding of scientific and engineering practices in authentic contexts that are content rich and work to unlock children's natural curiosity. The investigation described here was designed as a structured inquiry for fourth and fifth graders. The lesson reinforces math skills and understandings, uses technology in new ways, and has extensive applications across the curriculum.