Teaching video

in my teaching video i would want it so have a lot of explaining.
to speak clearly.
for the video to be about 3-5mins  long.
i liked the video that whaea mena had done for our class because she didn't make it so confusing
and i could kinda understand what she was saying.
but in my opinion i think she should of made the video a lot longer because  i could see she had alot more to say about integers.
but i really enjoyed watching that video .