Learning activities support learners to complete the assignment. In other words, they help learners to attain the learning objectives of the course. 

They fall into several categories:
– receptive
– productive (guided practice, implying other support)
– productive (free practice)
– reflective

They should be sequenced in this order and the order should not be corrupted.

You may also rely on Bloom’s Taxonomy in designing learning activities within a course.
See here in details.

You may also ask questions according to the Bloom’s Taxonomy.
Learn more here .