If you are learning Chinese, you will find that the Conversations and Texts presume you know some basic Chinese words (as found in any small Chinese-English dictionary), but are suitable for intermediate learners for self study.
Learn the vocab first and then study the materials. In the notes there are links to other examples of the language patterns that come up.
In addition to the method outlined above, try changing the situations and adding vocabulary. Encourage role play in small groups and adlibbing.
Eventually, encourage learners to be able to function in Chinese in their work and leisure environments.
Correct any texts they produce and with their permission, send them to Chris Dillon for inclusion here!