How to Use QR Codes in the Classroom — 8 Practical Ideas

QR codes are a low-effort, high-impact classroom tool. Students scan with any smartphone or tablet — no typing, no link-sharing, no login required. Here are eight genuinely useful applications, along with the best free tools to generate the codes.

How to generate QR codes for free

Use any free QR code generator: QR Code Generator (qr-code-generator.com), QRCode Monkey or simply type "QR code generator" into Google — the search result includes a built-in one. Paste your URL, download the PNG and insert it into a worksheet, display or printed sheet. No account needed for basic QR codes.

8 classroom uses

1. Link worksheets to digital resources

Print a QR code at the bottom of any worksheet that links to a how-to video, a glossary, a worked example or an audio explanation. Students who need extra support scan the code; students who do not, continue independently. One printed QR code replaces a teacher having to re-explain individually to five different students.

2. Scavenger hunt or carousel activity

Print a different QR code in each corner of the room (or around the school). Each code links to a question, a text extract or a resource. Groups rotate around the stations in different orders, scan the code and record their answer. Far more active than a traditional worksheet carousel.

3. Differentiated tasks

Create three versions of a task at different levels. Generate three different QR codes. Print all three on the worksheet — coded by colour or symbol so students know which to scan. Students scan their appropriate level code without the task level being visible to peers.

4. Audio instructions or feedback

Record a voice message using Vocaroo (vocaroo.com — free, no account required) or a Loom video. Generate a QR code for the link. Students scan to hear instructions read aloud, or to hear personalised audio feedback on their work. Particularly useful for EAL students and students with reading difficulties.

5. Exit ticket response

Print a QR code on the door of the classroom that links to a three-question Google Form exit ticket. Students scan as they leave and submit their response. You read the data at your desk while they move to the next lesson. No papers, no administration.

6. Book recommendations

Stick a QR code inside the front cover of classroom library books. The code links to a Padlet or Google Form where students who have read the book leave a rating and a one-sentence recommendation. Future readers scan to see peer reviews before choosing.

7. Parent communication

Print a QR code on the class newsletter that links to a video message from the teacher — a walk-through of the topic students are studying this month, with suggestions for how parents can support learning at home. More personal and informative than a paragraph of text.

8. Homework help videos

Record a short Loom or Screencastify video for common homework tasks — a model answer, a worked maths problem, a pronunciation guide. Generate a QR code for the video link. Include the code on the homework sheet so students can access help at home without needing to email the teacher at 9 pm.

Practical tips

• Test every QR code before printing — scan it yourself on two different devices.
• Make QR codes at least 2.5 cm × 2.5 cm on printed materials — smaller codes sometimes fail to scan.
• Include a short URL below the QR code as a backup for devices that cannot scan.
• Use Google's URL shortener or Bitly to make URLs manageable if you also print them as text.