Eye tracking is a useful tool for investigating how people read and the attention that they give to certain words and phrases. Eye tracking is used to investigate how different presentation formats of the same learning material affect learning performance, eye movements, and reading behaviour. We show that different presentation formats induce different eye movements and that reading behaviour is subject to the goals placed on the reader. We also observe that the presentation format affects not only their learning performance but also how they perceive their performance. Finally, we show that different formats and question types can induce specific reading behaviour such as thorough reading. This can be used to influence how students interact with the learning environment as well as how they learn the material. The purpose of this investigation is to be able to make informative decisions about designing adaptive eLearning environments.