Above, William Bean of the Aquaculture Research Center from Kentucky State University helps Mayfield Elementary School students use hydrometers they made Friday to distinguish salt water from fresh water as part of a lab dealing with the different types of aquatic environments. Students pictured, from left, are fourth-graders Myka Benson, Jalyn Brandenburg and Alaysha Herrington and fifth-grader Morgan Oliver. Bean’s visit to the school supplemented the students’ core content study of science.
