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.
On this day in 1947, President Harry S. Truman delivered the first televised presidential address from the White House â to a limited audience. Television was still in its infancy: There were only about 44,000 TV sets in U.S. homes, concentrated in a few cities, compared with some 40 million radios.