UCF鈥檚 Public History Center in Sanford rang in the first day of Seminole County schools Monday and hosted an open house for the community. The old-time school bell in the 1902 building聽was rung by associate professor Rosalind Beiler, director of the UCF center, and Walt Griffin, Seminole County鈥檚 school superintendent, to symbolize the beginning of the new school year and…