CLARK — Students in Mrs. Gotti’s fifth grade class at Valley Road School in Clark worked on a science experiment demonstrating chemical change. The students measured the change in temperature that occurred after they added vinegar and baking soda to water. Shown above are fifth graders Serafina Perrotto, Sarah Hewitt, Erik VonHollen, and Douglas Winkle working on their experiment. (Photo courtesy of Clark Public Schools)
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