A good website for authentic Spanish reading is www.muyinteresante.com.mx/junior
. With articles aimed at children, the environment and technology categories are particularly relevant to GCSE or AS-level students. For a reading homework with more challenge, you could ask them to choose an article from the site which most interests them and write a summary of it (in English or Spanish) to share with the class. They could also make a list of 10-20 new words on the topic. Alternatively they could print the article and write 10 questions about it, to swap with a partner for the following week's homework!