Who answers next, how much time is left for group work, who works with whom? KeypadLab has six free tools for exactly these classroom moments. Open them on the interactive whiteboard, link them from PowerPoint, or paste a code into Moodle, Google Sites or your school website. The embedded versions run with no ads, no cookies and no sign-up.
Which tool for which moment?
| Classroom moment | Tool | Tip |
|---|---|---|
| Who reads, presents or answers the question? | Spin the wheel | Remove picked names so everyone gets a turn |
| Work time, silent reading, presentation slots | Timer & stopwatch | Full screen on the projector, alarm at zero |
| Groups for projects or PE | Team generator | Split by number of groups or group size |
| Hand out topics, jobs or tasks | Assign topics | Draw the presentation order and dates too |
| Dice games, probability lessons, quick decisions | Dice & coin | Roll several dice for maths experiments |
| Raffle numbers, seating, random samples | Random number | No repeats for number lists |
Name lists you type in are saved in the browser on that device and are never sent to us, so your class list is still there next time you open the tool on the same computer.
All embed codes
“Copy code” gives you an iframe for websites and learning platforms. “Copy link” gives you the ad-free full view, which works well in PowerPoint, Teams or a bookmark on the teacher computer.
Using the tools in PowerPoint
PowerPoint cannot show a web page from a normal embed code. Two methods work reliably:
- As a link (works everywhere): click “Copy link” on a tool above. In PowerPoint, select a shape or some text, choose Insert → Link and paste the address. During the slide show one click opens the tool in the browser; Alt+Tab takes you back to the slide.
- Live on the slide with the “Web Viewer” add-in: in Microsoft 365 go to Insert → Get Add-ins, search for “Web Viewer” and add it, then paste the copied address. The tool runs live on the slide during the presentation. It needs an internet connection, and some school IT departments block add-ins.
Google Slides and Keynote work like the first method: they do not allow iframes, but a link to the ad-free view works fine.
Moodle, Google Sites, Classroom, Teams and websites
| Platform | How to do it |
|---|---|
| Moodle | Edit a text area or a “Page” resource, switch the editor to HTML/source view (the </> button) and paste the code. |
| Google Sites | Insert → Embed → Embed code, paste the code and drag the box to the size you want. |
| Google Classroom | Classroom does not take iframes. Add the copied link as material to an assignment or post. |
| Microsoft Teams | In a channel click +, choose the “Website” app and paste the copied link. The tool appears as its own tab. |
| WordPress | Add a “Custom HTML” block and paste the code. |
| Other site builders | Look for an element called “HTML”, “Embed” or “Code”. |
If the iframe disappears in Moodle after saving, the platform is filtering it out for your role. Your school’s Moodle admin can allow trusted content for teachers. Until then, the link works.
Tips for the projector and interactive whiteboard
- Full screen: F11 hides the browser bars. Ctrl++ makes everything bigger so the back row can read the timer.
- Prepare the class list: paste the names into the wheel or the team generator once, for example from a spreadsheet column with one name per line.
- Check the sound: the timer plays an alarm at zero. Test the room speaker before the lesson.
- Bookmark the tools: save the links from this page as bookmarks on the teacher computer so every tool is one click away.
Privacy in the embedded version
The embedded tools set no cookies, show no ads and load no analytics. Fonts and scripts come from our own server, not from third parties. As with any website, the web server receives technically necessary data such as the IP address when the page loads. Details are in the privacy policy.
Frequently asked questions
Are the tools free?
Yes. All tools and embed codes are free, including for schools and learning platforms. No account is needed.
Do students need to sign up?
No. The tools work without sign-up and without entering any personal data.
Do they work offline?
The page needs a connection to load. Once it is open, the timer, wheel and dice keep running in the browser even if the Wi-Fi drops for a moment.
Can I use the tools in worksheets and courses?
Yes, that is what the codes are for. The small credit line under the iframe links to KeypadLab and is welcome to stay.
Can I change the height of the embedded tool?
Yes. Change the height value in the code, for example to 500 for a smaller window.