Our working memory, which we use to temporarily store and manage information, has a small capacity and is really put to the test when we are taught new information.
It’s worth bearing this in mind when creating and using PowerPoint presentations in your teaching.
What does it mean?
Some researchers suggest that there are three kinds of cognitive load on our working memory; the descriptions of these below are based on teacher Andy Tharby’s articulation of them (2019):
Intrinsic cognitive load is related to the inherent difficulty of the subject being learnt.
Extraneous load refers to any extra or unnecessary thinking that students have to do that does not contribute to learning.
Germane load is the nourishing and productive thinking that causes students to form and consolidate long-term memories.
For PowerPoint presentations to be effective, teachers need to have: a good grasp of the difficulty your students will encounter when learning a new topic; strategies for
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