Current Rate vs Temporal Rate, how to learn/ memorize?

Anyone have any good tips for this? I don’t know why but after 2 year of not testing this I feel like the CFA will this year and I want to be ready.

Current Rate

All BS items current rate

All IS items avg rate

Equity Historical rate for both

Temporal Method think CHH AHH

BS items

monetary assets current

non-monetary assets historical

equity - Historical

IS items

Sales - Avg

COGS - Hist

Dep/Amort Hist

Current rate is used when the local currency is used

Temporal is used when the foreign (parent company) currency is used.

A bit simple but I just think Country Currency = Current… If that makes sense to you. Works for me anyways to remember which method to use.