LOUISIANA, Mo. — Frank Salter and his wife, Donna, presented the program “Fun With Science” during the second summer program June 7 at the Louisiana Area Historical Museum. One of the demonstrations involved using different sizes of wooden frogs to highlight sound pitches. Programs continue June 14 and 21 at 1 p.m. The museum at 304 Georgia Street in downtown Louisiana is open from 1 to 3 p.m. Wednesdays and 10 a.m. to noon Saturdays.