The development and evaluation of protocol films of teacher behavior David GliessmanRichard C. Pugh Articles Pages: 21 - 48
The effect of IQ Level on the instructional effectiveness of black-and-white and color illustrations Francis M. Dwyer Articles Pages: 49 - 62
Individual and small-group learning with computer-assisted instruction James R. OkeyKenneth Majer Articles Pages: 79 - 86
A note on reports of statistical analysis Ronald James MckayJohn Raymond NicholasGeorge Edward Tibbitts Comment Pages: 87 - 89