Content captions contextualize the videos or other materials given in courseware and state what students can expect to learn from it. Guiding questions help to focus on the important aspects of the video, and further information for self-directed exploration can be motivating. You can also add important terms and research papers that are discussed in the video.
MIDI: These tips are also suitable for current teaching situations, but require a little more preparation.
Depends of the length and style of the presentation, but 5-10 minutes per text for a video is reasonable.
Always try to make sure that the micro lecture is the protagonist of the page, such that students do not overlook it due to a very long text/introduction. 1) Give a brief introduction to the topic, e.g. by using thought provoking questions or examples (drawing on what students already know). 2) Explain how a new topic relates to previous ideas (recap constantly most important ideas/ formulas).
For the length of the texts two rules of thumb
„[In online learning] Content captions make the courseware more appealing, and seem to help online students a lot when studying for organizing, focussing and staying motivated, probably because these texts with a few sentences compensate context that on-site students have."
(Lutter, Ly; Frohn, Sabrina A. & Cruz, Misha Gabrielle P. (2022). Förderung von Kursverständnis, Fokus, Organisation und Motivation bei internationalen Förderung von Kursverständnis, Fokus, Organisation und Motivation bei internationalen Online-Studierenden in asynchronen Lernsettings. In Bernhard Standl (Hrsg.), Digitale Lehre nachhaltig gestalten (Bd. 80). Münster, New York: Waxmann Verlag GmbH.)
"Consider it as an introduction text, therefore additional explanations and prerequisites can be mentioned but the bulk of information on that page come from the micro lecture - which makes me prefer to link to other Coursware learning material or outside sources for explanations of prerequisites / reminders. For instance, by pointing out or asking about required knowledge and then offering a link to more info if the student (reading the intro text) couldn't answer it." (Sabrina Frohn, Educational Designer, OS-COSMOS).