Programmers normally want to minimize the time their code takes to execute. But in 1962, the Hungarian mathematician Tibor Radó posed the opposite problem. He asked: How long can a simple computer ...

The Ethiopian Journal of Education, Vol. 32, No. 2 (December 2012), pp. 1-37 (37 pages) This study aimed at examining students’ difficulties and misconceptions in learning concepts of calculus at ...