Intermediate
60 mins
Teacher/Student led
+80 XP
Pupils work through this independently

Checking Whether Sources Are Independent

Learn how to tell if sources supporting a claim are truly independent or just copies of each other. Sort examples in class and then apply independence checks to your own investigation claim by recording your evidence.

Teacher Class Feed

Load previous activity

    1 - Introduction ~5 mins

    Today you will

    • check one claim in three different places
    • spot when pages just copy each other
    • record your check in a file called {{code:sm4_independence_check}}

    Warm-up

    Illustration for IntroductionThree websites all say: "In Ireland, the digital age of consent is 16." What would convince you that they did not copy each other?

    2 - Key Concepts ~6 mins

    Independent sources reach the same claim using their own evidence, not each other's.

    A copy cascade is one piece of text copied across several pages.

    Circular citation is when two sources only point to each other as proof.

    A cross-check means testing one claim in separate places to see if each source stands alone.

    Example

    An official page says the digital age of consent is 16. A news site rewrites that page, and a blog quotes the news. That is one source copied twice, not three checks.

    3 - Independent or Copied? ~15 mins

    As a class, sort six source cards into independent verification or not independent. Talk about each card first, then place it and check.

    Key point

    Ask yourself: could each source still stand if the other two vanished?

    Independent or copied?

    4 - Common Issues ~2 mins

    Common issues

    • Three pages agree, so I thought they were independent. Check whether they all rewrite the same press release or article.
    • I can't tell if two news sites copied each other. If the wording matches closely, count them as one source.
    • My third source is a post sharing the first article. A share isn't a new source. Find a page with its own evidence.

    5 - Independent Practice ~25 mins

    Independent Practice

    Your goal: Check one claim from your investigation in three sources and record whether they are independent. This file goes in your portfolio.
    Time: ~20 minutes
    Task:
    1. Go to {{code:onedrive.com}} or {{code:drive.google.com}}, open {{code:Project_Portfolio}}, then open {{code:09_specialism/sm4/}}.
    2. Make a new document in that folder called {{code:sm4_independence_check}}.
    3. Pick one factual claim from your {{code:sm4_search_log}}. If it is empty, use the class claim in the box.
    4. Copy the layout in the box into your document.
    5. Find the claim in three sources, fill in each row and write your verdict.

    If all three turn out to be copies, say so in your verdict. That still counts.

    Success criteria:
    • My file is saved in {{code:09_specialism/sm4/}}.
    • My claim is one clear sentence.
    • Each of my three sources has a title, a link and an independence note.
    • I wrote a verdict at the end.

    Class claim: In Ireland, the digital age of consent is 16.

    Claim (one sentence): ________________________________

    SourceTitleURLWhat it says about the claimIndependence note
    1 (sample)Citizens Information guidancehttps://www.citizensinformation.ie (find the digital age of consent page)States the digital age of consent in Ireland is 16Independent, official original page
    2independent / depends on… / copy of…
    3independent / depends on… / copy of…

    Overall verdict: independent verification / partial dependence / copy cascade (and what you will do next if needed)

    123learn · Online learning platform

    Unlock the full learning experience

    You're previewing this lesson. Get full access to this lesson and hundreds more — each one ready to teach, with interactive activities, printable resources and pupil progress tracking built in.

    Hundreds of curriculum-aligned lessons
    Interactive activities in every lesson
    Printable resources & progress tracking
    Copyright Notice
    This lesson is copyright of Coding Ireland 2017 - 2026. Unauthorised use, copying or distribution is not allowed.
    🍪 Our website uses cookies to make your browsing experience better. By using our website you agree to our use of cookies. Learn more