Elaine Jo, Executive Master of the Ichiyo School, will conduct a demonstration of Ichiyo Ikebana on Tuesday, April 27, beginning at 9:30 am, at the University of Massachusetts Waltham Center, 240 Beaver Street in Waltham. There are numerous schools of ikebana, each with its own set of rules and techniques. One such is the Ichiyo School. Ichiyo, pronounced ee-chee-yo, means “one leaf” in Japanese and refers to the logo of the school. It was founded in Japan in 1937 by a brother and sister, Meikof and Ichiyo Kasuya. Since its beginnings, the two masters sought to create original ikebana that would be suitable for modern lifestyles and environments. For information, log on to www.ikebanaboston.org.