These are Dylan Wiliam's 5 Formative Assessment Strategies. Though this may better thought of 5 areas in which Formative assessment can take place. Also, these strategies have also been called strategies for responsive teaching.
Dylan has written a few books on the topic of formative assessment. An important and very practical one is called "Embedding Formative Assessment".
The ultimate goal of formative assessment is to provide feedback both to the student about their learning and to the instructor about their teaching. Each of Dylan's strategies come with techniques (see below).