More than half of LPS teachers add to their salaries with extra duties such as teaching summer school, sponsoring after-school clubs, coaching or putting on plays. While nearly 12 percent of teachers make $10,000 or more in extra pay, the rest make much less.
The first demonstrations of television in the US were in 1928 by Philo Farnsworth. It was more than a decade before televisions were made and sold commercially. In 1939, RCA b â¦ egan producing a commercially viable product and this represented the first widely available television.
Created and produced by Dick Wolf, the series premiered on NBC on September 20, 1999, as the second series in Wolf's successful Law & Order franchise. The show began its 18th season on September 21, 2016, and has aired 404 original episodes as of April 5, 2017.