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Work · Guided lesson

Read the catalog and call-number order

About 9 minutes · 3 reading + 6 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A fictional circulation desk packet with sorted call-number cards, item/patron loan records, hold queues, return exceptions and a privacy-preserving end-of-shift reconciliation.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Create the complete ordered shelf list; include the original-case decision evidence and a separate changed-case result.
  • Create an eligible proposed loan with due-period rule; include the original-case decision evidence and a separate changed-case result.
  • Record the allocation and remaining queue explicitly; include the original-case decision evidence and a separate changed-case result.
  • Create return and exception records without assigning blame; include the original-case decision evidence and a separate changed-case result.
  • Prepare an appropriate refusal/referral for private or specialist questions; include the original-case decision evidence and a separate changed-case result.
  • Assemble the circulation packet and a specific control; include the original-case decision evidence and a separate changed-case result.

Review and revise

Use these criteria to check your work and choose what to improve.

  • The final packet uses the supplied task-specific constraints and all six records agree.
  • Every result can be traced to an identifier, input, calculation or stated decision rule.
  • Changed-case practice updates dependent records and keeps holds or uncertainty visible.
  • The packet states the learner role, authority boundary and specific next verification needed before real work.
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Before you begin

The idea in everyday life

Original fictional workplace practice; paper or a local document is sufficient. The rules and records below are supplied for this exercise, not asserted universal workplace policy. Fictional Maple Library shelf rule: letter prefix alphabetically, decimal subject number numerically, author code alphabetically. Cards: QA76.2 A12; QA76.15 B10; QA76.2 B05; QB10 A01. This is a teaching rule, not a full classification-system course.

The idea

A local call-number rule is an explicit sorting method; sort each component in sequence rather than treating the whole label as one ordinary number.

Follow along

Read the catalog and call-number order — worked practice

A local call-number rule is an explicit sorting method; sort each component in sequence rather than treating the whole label as one ordinary number.

Fictional Maple Library shelf rule: letter prefix alphabetically, decimal subject number numerically, author code alphabetically. Cards: QA76.2 A12; QA76.15 B10; QA76.2 B05; QB10 A01. This is a teaching rule, not a full classification-system course. Use paper or a local document. Preserve the original case and make a separate changed-case record.

  1. 1. Step 1

    Separate prefix subject and author components.

    You should see: QA/76.2/A12; QA/76.15/B10; QA/76.2/B05; QB/10/A01.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  2. 2. Step 2

    Group by alphabetical prefix.

    You should see: All QA precede QB.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  3. 3. Step 3

    Order numbers then author codes within ties.

    You should see: QA76.15B10 precedes QA76.2A12 then QA76.2B05.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  4. 4. Step 4

    Create the complete ordered shelf list.

    You should see: A shelf-order record: QA76.15B10, QA76.2A12, QA76.2B05, QB10A01.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

Now change one thing

Add QA76.18 C02. Enter its one-based position in the new sorted five-card list.

Your work

What to finish

Create the complete ordered shelf list; include the original-case decision evidence and a separate changed-case result.

Common mistake

Watch for this

Comparing numeric subject values before the stated alphabetic prefix.

How can I tell I understand it?

Using the supplied identifiers, I can create the complete ordered shelf list. My changed-case record names the revised condition and explains which dependent decision it changes.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Under Maple’s supplied rule, which QA subject number comes first?
2Maple has QA76.2A12 and QA76.2B05. Which sorts first?
3Why not sort Maple QB10 before QA76.2 solely because 10<76.2?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
1
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

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Sources and further reading

Explore the references behind this lesson.

43-4121.00 - Library Assistants, Clerical
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

43-4171.00 - Receptionists and Information Clerks
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

Protecting Personal Information: A Guide for Business | Federal Trade Commission
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

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