Susan Marshall, children’s services librarian at the Rumford Public Library, left, uses baking soda, dish soap, vinegar and red food coloring to create a chemical reaction in a watermelon Wednesday afternoon. The experiment was one of several science, technology, engineering and mathematics projects. The library hosts children’s activities Wednesdays at 2 p.m. this summer. Rumford Falls Times photo by Marianne Hutchinson

Kassie Elliott of Rumford, her daughter Brielle Elliott, 6, and nephew A.J. Aleck, 5, participate in science, technology, engineering and mathematics projects at the Rumford Public Library on Wednesday afternoon. The library hosts children’s activities Wednesdays at 2 p.m. during the summer. Rumford Falls Times photo by Marianne Hutchinson