Do manufacturers' claims about water projectile toys measure up? It is one thing to assert that a Super Soaker[R] shoots thirty linear feet, but can it really shoot that far? This lesson gives students an opportunity to test the claims, experience measurement in a meaningful context, and analyze data within that context. Although measurement can be a challenging task to teach and learn (Clements 1999), using water toys makes this investigation topic interesting, exciting, feasible--and fun. By integrating measurement and data analysis, students have the opportunity to test manufacturers' claims. This investigation focuses on the grades 3-5 Standard in which students are expected to "understand measurable attributes of objects and the units, systems, and processes of measurement" as well as "the need[s] for measuring with standard units and becom[ing] familiar with standard units in the customary and metric systems." Expectations for K-grade 2 include understanding "how to measure using nonstandard and standard units" (NCTM 2000). This Super Soaker investigation includes extensions (for grades 5-8) and modifications (for grades 1-4) for other investigations using water projectiles.