Answer: The time period was from a time ago. At least before they had whiteboards and still when they had to use wooden ovens to keep warm instead of a heater. The chalkboards aren't used anymore and not many teachers refer to children as primary children.
Explanation:
I would say that it hasn't increased 20% because 1. if the starting percentage was 18%, you would see a larger precentage but that isn't the case.
Answer:
"You should volunteer to tutor! Imagine all of the students you could help with tutoring. I would want somebody who knows the subject to help me if I was struggling."
Explanation:
With pathos, you want to appeal to someone's emotions. You want the person to feel some sort of emotion.