Max Moeller of St. Marys adds a drop of water to an unknown substance in the criminal science investigation class at Camp Inquire held at Coldwater schools Tuesday morning. The summer camp is held during June and July for students in grades 2-6 who are selected based on problem-solving, critical thinking and creative skills. This year more than 600 students from a six-county area are participating in classes such as dissecting frogs, violin playing, rocket building and physical tribe challenges.