Evaluated were the performances of eight radio frequency systems by means of a measurement procedure said to be applicable to the evaluation of auditory training systems in classrooms for the aurally handicapped. (DB)

Presented are guidelines for selecting instructional materials for mathematics in light of individual developmental levels, handicapping conditions, and specific instructional objectives. (Author/GW)

Educators who make decisions on products and techniques to be used in their schools now have a central facility available where they can view and evaluate, cost free, the latest innovations in education. (Author)

Comparisons between three amplification systems of signals from photoelectric detectors are made. (RR)

Mobile and movable equipment can help to achieve substantial savings in time and money. (Author)

A look at the potential uses of videocassette technology in education and at some specific design features which educators should demand in such equipment. (AK)

The use of a teaching machine in working with physically handicapped retarded children is discussed. (CD)

Cassette players have advantages over radio receivers in literacy programs in developing areas. They are reasonable in price and can be mass-produced; they are flexible; they can be replayed again and again; they are reusable; and they can be used to record the immediate reaction of a class. (PT)