Why does the author discuss different playground equipment in
the section "From Strides to
Slides"?

To tell how playgrounds changed over time

Explanation:

The story talks about how playgrounds become safer for children.

To tell how playgrounds changed over time

Explanation:

different strategies reach different people based on their ability to understand the material. (from personal experience) when writing an argumentative essay write explaining the subject as though your audience never heard of it before and it is just being introduced, then explain why other people hate it also, afterward you would explain why that would be wrong. i hope that : )