Grade 6 students went on a field trip to Fresh Pond and the Cambridge Water Department Lab. They made observations of human impacts on the environment, and had a Q + A session with Ranger Omar to learn more about how the Fresh Pond rangers work to keep the pond clean. In the water lab students practiced pipetting liquids, completed a scavenger hunt in the lab (and were excited to meet Henry the turtle!), and interviewed water chemists about their jobs.