pkrp-about
This activity is designed to build a clear understanding of QR codes as an everyday digital tool, what they are, where they turn up, and how a quick scan can connect us to digital content for all kinds of purposes. Whether this is a learner’s first real look at QR codes or a deeper dive into something they already use, this activity provides a foundation. This is first part of the Understanding QR Codes series.
Learners will take stock of QR codes in the world around them, talk through what their purpose is and who they’re meant for, and examine the process of scanning them for themselves. Learners will recognise QR codes as a way of accessing digital information, describe their role in simple digital systems with inputs and outputs, and begin to evaluate how their design and function impact people in the real world.
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[Video] | Video Essay (Recommended for Y7+)
https://www.youtube.com/watch?v=w5ebcowAJD8
YouTube link for video “I built a QR code with my bare hands to see how it works” by Veritasium.
{Description}
Consider using this video to help explain and demonstrate aspects of a QR code in more detail. These sections are most relevant to this activity:
00:38-09:38 The Pre-History of QR Codes [09:00]
09:38-12:32 The Story of QR Codes [02:54]
29:05-31:16 Applications of QR Codes [02:11]
32:24-35:00 The Future of QR Codes [02:36]
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Recognising that a QR code stores digital content that can be retrieved later
Identifying a QR code as input, linked content as output, and how they fit in a simple sequence, using the everyday examples
Using a device’s camera or a scanner app in a guided context to follow a simple sequence and retrieve linked content
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Identifying the QR code as the input, the scanning device as the processor, and the linked content as the output in a simple digital system
Recognising the control role people play in deciding whether to scan a code and open what it leads to
Evaluating digital outcomes for real-world contexts, including how QR codes impact how people access information
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Understanding that scanning a code and storing or sharing what it leads to carries the same security and privacy responsibilities as any other digital action
Explaining why a QR code’s destination can’t be verified just by looking at it, unlike a written URL web address
Recognising and applying a simple set of trust signals for evaluating QR codes before deciding whether to use them
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social-sciences
Exploring how businesses and communities utilise QR codes to operate, using real and imagined examples to examine how digital tools shape everyday economic and social life.
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Using purpose-and-audience thinking to evaluate QR codes, describe what they notice, explain processes, and justify opinions.
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Consider running the activity without internet connection, where devices recognise QR codes and their links without accessing and loading external content.
Challenge learners to visualise their systems thinking by sketching and explaining the input-process-output journey of a QR code scan.
Consider viewing the YouTube video essay by Veritasium, "I built a QR code with my bare hands to see how it works". See Supporting Materials for the video link and timestamps for the segments that pair well with this activity.
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Assign the six real-world sectors, from the “Where do we find them?” section, to small groups to research and report back to the class real examples of how QR codes impact that sector.
Challenge learners to consider what hidden steps happen in the background when scanning QR codes, to identify roles, map steps, and put together a skit that demonstrates the process.
Challenge learners to attempt to design and justify a better or simpler alternative to QR codes in certain examples, weighing up trade-offs to build genuine evaluative thinking.
Invite learners who already scan QR codes to audit their own recent scanning habits against the trust-signal habits discussed during the lesson.
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Teachers should consider:
Pre-selecting QR codes, to have a selection of age-appropriate, school-approved, real QR codes on hand to demonstrate with, like on printed handouts, posters, or packaging, so learners can scan and explore using reliable, trusted, and safe resources.
Gauging existing familiarity, particularly with older student groups, since many learners might already use QR codes regularly. Check in early and pace the lesson to formalise best practise and critically examine any existing habits.
Device preparation, including charging batteries, checking whether the built-in cameras scan QR codes directly or whether dedicated QR code scanner app is needed, and potentially connecting to the internet.
Group assignments, including supporting student collaboration and making sure each group has a device with a working camera and QR code scanning capability.
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Building good habits sets learners up to use QR codes safely and confidently. For learners who already scan QR codes habitually, this is a chance to ground and sharpen an existing skill.
>>> About QR Codes
QR codes are widely used in public and commercial environments, but not all QR codes are safe or trustworthy. It’s important that learners take steps to understand where a code has come from and where it leads.
Genuine QR codes can be powerful tools that help us connect more effortlessly with people and things.
Malicious QR codes can expose us to harmful websites, trigger unwanted downloads, or collect personal information without consent.
Most modern smartphones and tablets can read a QR code with their built-in camera. For devices that can’t, there are QR code scanning apps available.
Reading a code with a camera happens offline and is your device recognising and decoding a pattern.
Opening a link requires internet connection and is your device accessing content online.
>>> General Guidance
Frame QR codes as encoded data that connects with real content, not just funny things to scan.
Frame awareness as a tool and information-gathering as a skill.
“We check before we scan” is a habit, not a fear.
We control our decisions and actions, not the content QR codes connect with.
Maintain a clear boundary between learning environments and uncontrolled digital spaces.
Reinforce that not all codes should be trusted or tested blindly.
Avoid inviting or encouraging learners to scan random codes they find on their own in public spaces.
>>> Before the Activity
Check that devices have working cameras and reliable internet connection, or consider running the activity without the internet to show how devices recognise QR codes, rather than interact with external content.
Use only pre-selected QR codes that lead to school-approved content, and preview every code you plan to use, to confirm that each code works.
Make sure all linked content is age-appropriate and supports learning objectives rather than distracts from them.
>>> During the Activity
Supervise device use throughout to make sure devices are supporting learning.
Reinforce the pause-before-tapping habit in the moment, to support meaningful experience with best practice.
If a learner discloses a real experience, acknowledge it and bring the group discussion back to the general framework rather than focus on their specific situation. See the If a Learner Discloses Something guidance for more on this.
>>> If a Learner Discloses Something
Talking openly about digital risk can prompt learners to mention something that they’ve heard about or that’s even actually happened to them.
In the Moment:
Acknowledge and validate kindly and calmly. You don’t need to resolve anything on the spot. Your job in the moment is to make the learner feel heard. “Thanks for sharing. That sounds like it was confusing/frustrating/a bit scary” goes a long way, without needing to draw out further detail in front of the class.
Keep the focus general rather than personal. “That’s a great example of the kind of thing our framework is designed to catch” helps bring things back to the objective rather than examining a personal situation in front of the class.
Handling vs Redirecting:
Many disclosures are OK to handle within the lesson by contextualising how the framework itself is designed to address them. These kinds of more commonplace issues, like a confusing website address, an odd pop-up, or other moments of uncertainty, are worth acknowledging and then checking in on privately afterward.
Some disclosures are worth treating as a cue to redirect to more appropriate counsel rather than risk mishandling a more serious issue. Trust your instincts and your understanding of your school’s processes to identify signs of real distress, risks to safety, and what to do next.
When in doubt, redirect. You don’t have to make the call alone or immediately. A private follow-up conversation is always available as a next step, and your school will have processes and people to support you and your learners in this.
Next Steps:
Follow up privately with the learner, even briefly, so they know it wasn’t just brushed past.
Reach out for help, if a disclosure or follow-up conversation meets any signals for concern, by looping in whoever your school’s process points to that can provide the appropriate care and assistance.
>>> After the Activity
Reflect on what makes a QR code feel trustworthy or not, reinforcing that making informed decisions is what we can control to keep ourselves safe, not the content itself.
Reinforce a clear boundary between learning environments and uncontrolled digital spaces, including that not all QR codes should be trusted or tested.
Consider clearing browser history, or other data created during the activity, from shared devices.
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>>> y4-6 | Y4-6 | 1 Lesson (Guided & Scaffolded)
Introduction & Hook — Show learners the QR code from the Activity Guide, and ask what they think it is and where they might have seen one before.
What Is a QR Code? — Go over the “What is a QR code?” section of the Activity Guide together.
Then compare a QR code with the barcode on an everyday product in the classroom to spot what’s different.
Unpack the term ‘QR’ and where the idea came from. If possible, show the board game Go, and discuss the visual links between the game and the code.
Open, Scan, Explore (Safely) — Model the three steps on the big screen, then have pairs scan the guide’s sample code with a class device. Have them pause before tapping to talk about how they know this code is safe to open.
Where Do We Find Them? — Give each group one of the six areas from the guide, such as Hospitality or Travel, and ask them to share a place they’ve seen a QR code used that way (without the need to share actual experiences scanning, see Digital Safety & Wellbeing for more guidance).
Wrap-Up & Reflection — Have learners finish the sentence "A QR code helps people…", considering both the people who make them and who scan them, to help consolidate an understanding of what they are and why we find them in certain places.
>>> y7-8 | Y7-8 | 1 Lesson (Guided Inquiry)
Introduction & Discussion — On their own or in groups, have learners list places they’ve seen a QR code recently (without the need to share actual experiences scanning, see Digital Safety & Wellbeing for more guidance).
Compare answers as a class to surface how common they may be and what role they seem to play.
Then have them predict how a pattern of squares could hold so much and such specific information.
What Is a QR Code? — In small groups, have learners read the “What is a QR code?” section of the Activity Guide.
Ask learners to identify what QR codes can do that ordinary barcodes can’t, then share their findings with the class.
Discuss the 1994 origin story and its link to the board game Go. Ask learners why speed and reliability mattered for tracking products, and why those same qualities helped QR codes spread to phones and tablets.
Open, Scan, Explore (Safely) — Have learners scan the guide’s sample code and notice what notifications show before tapping. Then discuss what it might mean in practice to be sure that a QR code and its link are safe.
Where Do We Find Them? — Assign each group a sector from the guide and have them identify what the QR code replaces in each example, like typing a web address, handling a paper menu, or needing a printed ticket. Have groups report back, then discuss which uses they think are most helpful or not, and why.
Wrap-Up & Reflection — Ask each group to share one place they think a QR code could be useful to solve a problem or process in their everyday life, and, alternatively, where using a QR code might not be as good of an idea and why.
>>> y9plus | Y9+ | 1 Lesson (Critical Discussion)
Introduction & Discussion — On their own or in groups, have learners list places they’ve seen a QR code recently (without the need to share actual experiences scanning, see Digital Safety & Wellbeing for more guidance).
Compare answers as a class to surface how common they may be and what role they seem to play.
Then have them predict how a pattern of squares could hold so much and such specific information.
What Is a QR Code? — In small groups, have learners read the “What is a QR code?” section of the Activity Guide.
Have learners analyse why a two-dimensional grid can hold more complex information than a barcode and why being readable from different angles matters in real-world use, then share their findings with the class.
Discuss the 1994 origin story and its link to the board game Go. Ask learners why speed and reliability mattered for tracking products, and why those same qualities helped QR codes spread to phones and tablets.
Open, Scan, Explore (Safely) — Have learners scan the guide’s sample code.
Notice what notifications show before tapping and what information this gives us.
Map a QR code use case end-to-end as a system diagram, device → scan → destination → content, making the process visible.
Consider what would actually make them sure a code is safe, and build a shared list of their criteria to return to later in the series.
Where Do We Find Them? — Have groups weigh two sectors from the guide against each other. Compare the convenience a QR code offers with what’s at stake if something goes wrong, such as paying at checkout versus viewing a menu.
Wrap-Up & Reflection — Ask each group to share one place they think a QR code could be useful to solve a problem or process in their everyday life, and, alternatively, where using a QR code might not be as good of an idea and why.