“…These new machines that promised faster learning, while relieving some of the teacher’s burden, were met with an enthusiasm never experienced by Pressey. By 1962 there were 65 different teaching machines on the market, ranging in price from $20 to $6,500 (Kreig, 1961), and nearly 200 private companies were producing teaching machines, programmed texts, or both (Leib et al, 1967; “The Truth About,” 1962).…”