'Factfiles' are a sub-series of 'Bookworms' with a non-fiction
angle providing factual information for students on a wide variety
of themes. Exercises at the back of each book check students'
understanding of the text and provide ideas for activities and
project work. Oxford Bookworms enjoy a world-wide reputation for
high-quality storytelling and a great reading experience. Research
shows reading a lot improves all your language skills. Experts
recognize Oxford Bookworms as the most consistent series in terms
of language control, length, and quality of story - very important
for fluent reading and extensive reading. There's a wide choice of
titles too - something for everyone.