In pandemic, Nigerian teacher can `teach the whole world'

For many 12th graders, the closure of Nigeria’s public schools to combat the spread of COVID-19 presents a particular problem: How to prepare for crucial, final exams? Basirat Olamide Ajayi, a math teacher in Lagos, Nigeria’s biggest city, came up with a solution. Students watch her short math videos -- no more than 5 minutes long -- and respond to her questions.

source https://news.yahoo.com/pandemic-nigerian-teacher-teach-whole-080159538.html