Question on Simplifying Sentences Strategy

In the strategy Greg talks about simplifying each sentence in the passage in case of short passages and simplifying each paragraph in long ones.
My question:
I’m not sure if Greg asked us to write down the simplified sentences on the piece of paper or if we just mentally make a note of it as we read the passage. Any clarification is appreciated.

You get 1 min to simplify each paragraph so, taking notes mentally will be the best strategy here but you can write important keywords in a piece of paper to supplement your mental notes.

Aha got it. It makes a lot more sense to do that, so in a way these strategies are just tools in your toolkit just like the TC and SE strategies? Thank you ^^