Risks of using Duolingo by Polish Learners at Primary Level

Despite the advantages of using Duolingo by language learners for learning vocabulary there are also risks which may influence the effects of learning the target language. The text presents some examples of controversial areas which need to be considered by English teachers who want to recommend this crowdsourcing tool to their learners in the Polish context. It can be used as a complementary material but the teacher should monitor the acquisition of the target language to prevent mistakes and misunderstandings. The article provides examples of potentially misleading issues the Polish learners may acquire wholelearning English with the use of Duolingo.