The document discusses six types of tasks that can be used in textbooks or adapted from activities:
1) Listing tasks where learners list people, places, things, etc.
2) Ordering and sorting tasks where learners sequence, rank or classify information.
3) Matching tasks where learners match captions, texts, or information.
4) Comparing tasks where learners find similarities and differences.
5) Problem-solving tasks where learners address common problems.
6) Storytelling tasks where learners share personal experiences.
The document also discusses how to build a set of tasks around a theme and ways to stimulate richer learner interaction for more language practice.