In the summer of 2012, the Kidspace children’s museum opened its newest exhibit, the Galvin Physics Forest (Physics Forest), which features thirteen new hands-on exhibits to engage visitors. Through its informal leaning milieu, visitors are offered a very dynamic program experience targeted to multiple learning styles. With the Physics Forest providing such an opportunity for exploration and diverse experience, Kidspace wanted to better understand and document what positive impacts the exhibit had on visitors. We developed an impact evaluation plan for substantive study of the exhibit’s effects on their target audience (children Grades K – 8). Such as study can be used to highlight the program’s impacts for current and potential funders, increase internal understandings of the program’s potential, and market the program to teachers, administrators, and parents, among other uses. Our evaluation plan consisted of a program-level logic model, an evaluation design, procedures for data collection analysis, and an evaluation toolkit with sample instruments.