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Principles of Accounts · Secondary 3

Active learning ideas

The Cash Book and Petty Cash

The Cash Book is a unique book of original entry because it also serves as a ledger account. Students learn to record all cash and bank transactions, including the complexities of cash discounts and contra entries. This topic also introduces the Petty Cash Book and the imprest system, which is a practical method for managing small, everyday business expenses like office snacks or local transport.

MOE Syllabus OutcomesMOE POA Syllabus 7087, Section 4.3MOE POA Syllabus 7087, Section 4.4
20–45 minPairs → Whole Class3 activities

Activity 01

Inquiry Circle40 min · Small Groups

Inquiry Circle: The Petty Cash Challenge

Groups are given a set amount of 'petty cash' and a list of small expenses. They must record these and calculate the 'reimbursement' needed to restore the float under the imprest system.

How do we record cash discounts in the cash book?
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Activity 02

Think-Pair-Share20 min · Pairs

Think-Pair-Share: Decoding Contra Entries

Students are given a scenario where cash is deposited into the bank. They think about how it affects both the cash and bank columns, then pair up to draw the entry.

What is a contra entry?
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Activity 03

Stations Rotation45 min · Small Groups

Stations Rotation: Discount Discovery

Set up stations with different payment scenarios involving 'Cash Discount Allowed' and 'Cash Discount Received'. Students calculate the final amount paid and record it in the three-column cash book.

How does the imprest system control petty cash expenditure?
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A few notes on teaching this unit


Watch Out for These Misconceptions

  • Trade discounts are recorded in the Cash Book.

    Explain that only cash discounts (for prompt payment) are recorded in the Cash Book; trade discounts are deducted before the invoice price. A comparative calculation exercise helps students see that trade discounts never enter the ledger.

  • A contra entry involves an external party.

    Clarify that a contra entry is an internal transfer between the cash box and the bank account. Using a visual 'money transfer' diagram during peer discussion helps students visualize that no money is leaving the business.


Methods used in this brief