Eight-year-olds Rose Collins, left, and Sylvan Cocco-Romano, both of Amherst, use popsicle sticks, tape and cardboard to mimic the style of a rope bridge during art camp at the Jones Library in Amherst. “Instead of working with just a pen and paper, we use other things,” said Collins. The bridge-building activity encourages STEM (science, technology, engineering and math) skills as well as teamwork.