What is the appropriate length of a microlesson?

No doubt you’ve heard that a microlesson is a bite-sized bit of information. Yet, what is the appropriate length of such an educational bite?

If we were talking about food, we’d be talking about “amuse-bouches” (French for “mouth amusers/entertainers”). You know, those tasty, little morsels which accompany drinks at the start of parties and formal events. 

Amuse-bouche characteristics