Intermediate
60 mins
Teacher/Student led
+65 XP

File Formats and Conversion

Learn to select the correct spreadsheet file format for different audiences and tasks. Export your work into CSV and PDF versions and observe which details are kept or lost during conversion. Keep your editable version as the main copy.

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    1 - Introduction ~5 mins

    Why format choice matters

    A spreadsheet is only useful if the person receiving it can open it and use it the way you intended. Sending an editable workbook to a Work Experience supervisor who only needs a finished summary is the wrong call; sending a PDF to someone who must re-sort the data is just as wrong. Today you learn which file format fits which job, then export your Something Real spreadsheet so you keep a working copy, a data-only copy, and a finished share copy.

    By the end of this lesson, you will be able to:

    • Choose among .xlsx, .ods, .csv, and .pdf for purpose
    • Convert between formats and recognise what breaks or survives
    • Export the working spreadsheet as .csv and .pdf as well as native format

    Warm-up

    Imagine you must send this week's stock list to two people: a supplier who will load the numbers into their own system, and a placement supervisor who only needs a clean printout for a meeting. Which format would you send to each person, and why?

    Before you start

    Open {{code:Project_Portfolio/09_specialism/sm3}} and check that {{code:sm3_from_template}} is there. If it is missing, restore it from the class template or ask your teacher for the starter file, then save it in {{code:sm3}} with that exact name before any export. Do not use a random master filename in this lesson.

    2 - Key Concepts ~6 mins

    Four spreadsheet-related formats turn up again and again at work, in apprenticeships, and in LCA tasks. The format is a decision about audience and purpose, not a random download choice.

    ConceptWhy it mattersExample
    .xlsx (Excel workbook) — the full working spreadsheet format used by Excel for the web and many desktop apps Keeps formulas, formatting, multiple sheets, and charts so you can keep editing Your live Something Real budget or stock sheet that you still update each week
    .ods (OpenDocument Spreadsheet) — an open standard workbook format used by LibreOffice and supported as an export option Useful when a recipient's workplace standardises on open formats rather than Microsoft files Sharing a cost sheet with a community group that asks for open-document files
    .csv (Comma-Separated Values) — plain text rows of data separated by commas; no real spreadsheet formatting Perfect for moving raw numbers between systems; terrible as a finished document Exporting product names and prices so a supplier or another app can import the list
    .pdf (Portable Document Format) — a fixed-layout snapshot for reading and printing Looks the same on almost any device and is hard to accidentally edit; formulas are gone Sending a polished one-page summary to a Work Experience supervisor or for a Key Assignment print pack

    Three takeaways

    • Master: .xlsx or native Google Sheet — keep editing here
    • Data hand-off: .csv — values only for another system
    • Finished share: .pdf — read-only meeting or print pack

    Stop — tell your partner: which file is the master, and why must you never replace it with a CSV or PDF?

    What survives the conversion

    When you export, some things travel and some things do not:

    • .csv usually keeps values from the active sheet only. Formulas become plain numbers (or plain text). Formatting, charts, and extra sheets are lost.
    • .pdf keeps the look of the printed page. You cannot edit cells or recalculate totals inside it.
    • .ods often keeps structure and many formulas, but complex Excel-only features can shift or drop. (Extension only today.)
    • .xlsx / Sheets is your editable master. Keep it. Export copies for sharing; do not replace the master with a CSV or PDF.

    Worked example: a short stock list (Item, Net (€), Qty, Total formula). CSV goes to the supplier; PDF goes to the supervisor; the master stays in the portfolio.

    Quick class call-out: teacher names a job — supplier import, print for interview folder, keep editing — class calls the format.

    3 - Step-by-step Task ~20 mins

    Export the same Something Real spreadsheet two ways (.csv and .pdf), reopen each copy, and note what survived. Your editable master stays in the portfolio; the downloads are copies for checking and filing. (.ods is extension only later if you finish early.)

    4 - Common Issues ~4 mins

    Common Issues

    IssueSolution
    My CSV has no formulas and the currency formatting is gone That is expected (you should already have seen this when you opened the CSV). CSV stores values as plain text. Keep the .xlsx or Google Sheet as the editable master and treat CSV as a data hand-off only.
    The PDF cuts off columns or looks huge on one page Before exporting, use print/page setup (landscape, fit-to-width) if available, or narrow unused columns. In Google Sheets the print settings panel appears automatically after {{menu:File -> Download -> PDF Document (.pdf)}}. Re-export after the layout looks right in preview.
    I cannot find the downloads in my portfolio folder Browser downloads go to the device Downloads folder first. Upload or move the .csv and .pdf into {{code:Project_Portfolio/09_specialism/sm3}} yourself, using the exact names {{code:sm3_from_template.csv}} and {{code:sm3_from_template.pdf}}.
    Only one sheet appeared in the CSV CSV exports the active sheet only. Switch to each sheet and export separately if you truly need every sheet as data, or share the full workbook instead.
    I cannot see ODS / OpenDocument in Excel for the web That is fine for today. Core evidence is master + CSV + PDF. Try ODS on Google Sheets later, or treat it as the extension challenge only.

    5 - Independent Practice ~15 mins

    Independent Practice

    Your goal: Prove you can choose the right format for the job by comparing what survived in each export and naming one real use for the CSV and one for the PDF — without mixing those jobs up with your editable master.
    Time: ~15 minutes
    Task: Open {{code:Project_Portfolio/09_specialism/sm3}}. Confirm the master, {{code:sm3_from_template.csv}}, and {{code:sm3_from_template.pdf}} are already there from the guided task. (If either export is missing, export only the missing one now and upload it; do not re-export files that are already filed.) Create a short note file named exactly {{code:sm3_format_notes}} in the same {{code:sm3}} folder. Using a simple checklist (live formulas? currency formatting? more than one sheet?), write what stayed and what was lost in the CSV and in the PDF compared with the master. Add two labelled lines: CSV use-case: and PDF recipient:. For your Something Real project, name one real person or system for each. If you are on a practice sheet rather than your own project, pick a plausible Work Experience or supplier scenario (for example supervisor meeting handout / supplier price import) and write that. Finish with one decision sentence: which single file you would email this week, to whom, and why — not all three.
    Success criteria:
    • The native working spreadsheet is still in {{code:sm3}} and still opens for editing
    • {{code:sm3_from_template.csv}} and {{code:sm3_from_template.pdf}} both sit in {{code:sm3}} (not only in Downloads)
    • {{code:sm3_format_notes}} is saved in {{code:sm3}} with a short comparison of what survived or was lost, plus labelled CSV use-case: and PDF recipient: lines
    • You name one real (or plausible Work Experience/supplier) use for the CSV and one for the PDF, and one sentence choosing a single file to send this week
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