Henry Junak believes the human body is the perfect, God-given machine. “In his own relentless quest for perfection, man is trying to build the ‘perfect machine’ – one that will, someday, be in ...

The Journal of the Learning Sciences, Vol. 2, No. 4 (1992), pp. 333-365 (33 pages) How do students learn mathematics from classroom instruction? We propose a framework in which we assume that a ...