The advent of mobile learning offers opportunities for students to do two things at once in an educational context: learning while performing another activity. The main aim of the reported studies is to address the effect of multitasking on learning with a mobile device. Two experiments were set up to examine the effect of performing a secondary task while learning with an iPod. In the experimental groups, the participants had to combine a learning task (watching movies on an iPod while sitting at a desk) with a secondary task (tightening bolts and nuts). The control group only had to perform the learning task. Additionally, participants of the experimental groups received different instructions. Some were asked to do both tasks as good as possible, others were told that the learning was important and the tightening less important, and the opposite was told to the participants of the third experimental group. Afterwards, all the participants had to complete a learning test and participants of the experimental group also received a tightening score. In general, the effect of condition on the learning score was rather limited. Only one significant effect was found and it was limited to a difference between students of the control groups who outperformed the students focusing on the tightening task while learning. (Contains 8 notes, 1 figure, and 2 tables.)