Our 10,000 Word Journey is designed for children aged 2–17 years old. However, we have had feedback from customers who have used our sets successfully with younger children and with adults.
Our current programme is not designed to teach English to adults, and does not teach grammatical structures. However, we teach vocabulary in a fun, visual way, which we feel can be appealing for adult learners as well as for children. We don't think you an assign an age to words, or to hilarious illustrations.