Begin with one clear idea
A micro-lesson should introduce a single relationship or fact, not compress an entire chapter. A visual example then makes the idea concrete before testing it.
Keeping the scope small creates room for an explanation after the answer. That explanation is where a mistake can become useful.
Answer actively and use feedback
Choose an answer before revealing the solution. Retrieval and application require more effort than passive reading, which makes them informative for learning.
Read the explanation even when correct. It may show a faster method, a missing condition or the reason another option was tempting.
Use a weekly rhythm instead of pressure
Three active days can form a realistic weekly rhythm. Extra sessions are welcome, but a missed day should not turn the product into punishment.
Return to uncertain ideas after a delay and mix subjects. Spacing and variation help distinguish genuine recall from recognition of the previous screen.