Final answer:
The proper sequence of activities in a manual accounting system is journalize, post, summarize.
Step-by-step explanation:
The proper sequence of activities in a manual accounting system is journalize, post, summarize.
First, the transactions are recorded in the journal. This is known as journalizing. Then, the recorded transactions are posted to the respective ledger accounts. This is called posting. Finally, the information from the ledger accounts is summarized in financial statements or reports. This step is known as summarization.