E-Learning brings access to a powerful but often overlooked teaching tool: random number generation. Using random number generation, a practically infinite number of quantitative problem-solution sets can be created. In addition, within the e-learning context, in the spirit of the mastery of learning, it is possible to assign online quantitative…

In this article, the authors aim to identify the causal effect of the use of graded problem sets on academic performance of Spanish students. The identification strategy relies on an experiment in which the authors exploit variation arising from observing the performance of nearly 300 students taking the same class during the same semester and…