Retired Kutztown High School physics teacher Dave Drummer tells students about the ingredients they will be using in an experiment as they compete against each other in a science lab competition. All students are given the supplies to create their own experiments and they must analyze the work they do. The 6th Tiger Invitational Science Olympiad at Northwestern Lehigh High School featured students from 16 schools Saturday. Students from some schools could not attend because of the weather.
DONNA FISHER / THE MORNING CALL
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