Youth Program: Fish Math: Children ages 7-13 are invited to join Makoshika State Park staff this summer for an exciting and educational experience! Through games and activities, students will learn how fish biologists use math and science to calculate the population of fish in a river system. Participants should bring a water bottle, bug spray, sunscreen, and dress appropriately for the weather. Tennis shoes, please no flip-flops or open-toed sandals.