Beekmantown Middle School Seventh-grader Sierra Deyo (right) teaches her brother, Zavier, who is a Cumberland Head Elementary School second-grader, how to build and use a marshmallow launcher last week for STEM Day. Seventh-graders gave demonstrations and built displays involving science, technology, engineering and math (STEM) to instruct younger students in the Cumberland Head Elementary School's gymnasium.

(Rob Fountain/ Staff Photo)

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