Teaching English to children who do not come from an English speaking background is an interesting challenge for educators. In this paper, we present an Augmented reality (AR) tool, TeachAR, for teaching basic English words (colors, shapes, and prepositions) to children for whom English is not a native language. In a pilot study we compare our AR system to a traditional non-AR system. The results indicate a potentially better learning outcome using the TeachAR system than the traditional system. It also showed that children enjoyed using AR-based methods. However, it also showed a few usability issues with the TeachAR interface, which we will improve on in the future.