The first color television sets for this system were sold in 1954. They used a 15 inch screen. Later that year, 19 inch sets were made, and by 1955 all sets were made with a 21 inch picture tube.Several manufacturers made 15 and 19 inch sets, most in very small quantities.he most comprehensive website on early color history is by Ed Reitan. The first set was made by Westinghouse, and sold for $1295. RCA introduced the CT-100 a few weeks later, at a price of $1000. GE sold its 15 inch set for $1,000, Sylvania's cost $1,150.
When routines and procedures are carefully taught, modeled, and established in the classroom, children know whatâs expected of them and how to do certain things on their own. Having these predictable patterns in place allows teachers to spend more time in meaningful instruction.
When students are struggling with poor academic performance, low self-efficacy or low motivation, one strategy that may help is to teach them how to learn. That is, to outline specific strategies for completing an assignment, note-taking or reviewing for an exam. [Tuckerman 2003] [Margolis and McCabe, 2006]