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Classroom lock games and quiz templates for teachers

10 lock games for the classroom, free to play with no account: a math riddle with a four-digit answer, a vocabulary lock, a science lock, history and geography codes, a melody to play on a piano, and a class quiz that chains them. Each one takes 4 to 30 minutes, at the start of a lesson on the class screen or on pupils' phones. Play one as your pupils would, then copy it and write your own questions in. 6 of them publish free, for good.

10 templates

Class quizEvent Pass
Easy15 min1 step

Class quiz

One question, one answer, the next resource behind it. The fastest way to use a lock in a lesson.

Locks used: Written answer

Available in: EN · FR · ES · CA · PT · Free to open and edit. Published with an Event Pass or Pro.

Play the example
Math riddle lock
Easy5 min1 step

Math riddle lock

A math riddle with a four-digit answer: one chain of small sums ends in the code. A warm-up for the start of a math lesson, on the class screen or on phones.

Locks used: Numeric code

Available in: EN · FR · ES · CA · PT

Play the example
What am I riddle lock
Easy5 min1 step

What am I riddle lock

A what-am-I word riddle with one answer, typed on the lock. A five-minute vocabulary opener for a language lesson, in the pupils' own language.

Locks used: Written answer

Available in: EN · FR · ES · CA · PT

Play the example
Science riddle lock
Easy5 min1 step

Science riddle lock

One force, one word, one lock. A science warm-up that pupils solve on the class screen before the lesson starts.

Locks used: Written answer

Available in: EN · FR · ES · CA · PT

Play the example
History date lock
Easy5 min1 step

History date lock

A year hidden in a riddle, entered on a four-digit lock. A history opener that gets a whole class arguing about centuries and decades.

Locks used: Numeric code

Available in: EN · FR · ES · CA · PT

Play the example
Geography riddle lock
Easy5 min1 step

Geography riddle lock

A capital city hidden in four clues, typed on the lock. A geography opener for the class screen, five minutes and no equipment.

Locks used: Written answer

Available in: EN · FR · ES · CA · PT

Play the example
Music note lock
Easy5 min1 step

Music note lock

Listen to eight notes, then play them back on the piano keys. A five-minute ear exercise for a music lesson, on the class screen or on phones.

Locks used: Musical sequence

Available in: EN · FR · ES · CA · PT

Play the example
Repeat the melodyEvent Pass
Medium4 min1 step

Repeat the melody

Play a short melody, let them hear it three times, and they have to repeat it on the piano to unlock what is behind it.

Locks used: Musical sequence

Available in: EN · FR · ES · CA · PT · Free to open and edit. Published with an Event Pass or Pro.

Play the example
Interactive trainingEvent Pass
Medium30 min2 steps

Interactive training

Two checkpoints that make a module active instead of passive. Learners earn the next resource.

Locks used: Switches, Username and password

Available in: EN · FR · ES · CA · PT · Free to open and edit. Published with an Event Pass or Pro.

Play the example
Grandmaster GridPro
Hard25 min1 step

Grandmaster Grid

One hard sudoku, twenty-five minutes, one play per device. No hints beyond the rules, a clock the server keeps, and a time on the board for whoever finishes. The cleanest contest the product can run.

Locks used: Sudoku

Available in: EN · FR · ES · CA · PT · Free to open and edit. Published with Pro.

Play the example

Filmed objects for these locks

8 objects filmed for this occasion, in the builder: they fidget while the lock holds and open on video when it gives way.

Questions

How do I use a lock game in class?
Put the lock on the class screen and let the room solve it out loud, or share the link so pairs solve it on a phone. The reveal can be the day's topic, the page to open, a congratulations, or the next question. A lock is five minutes of attention at the start of a lesson, and pupils ask for the next one.
Can I change the questions and the answers?
Yes, everything. The riddle and the hint are plain text, the answer is a code, a word, a pattern or a melody of your choosing, and so is the wrong-answer message. Copy a template, replace its questions with this week's, and publish: the pupils see nothing of the template.
Do pupils need an account or an app?
No. They open a link or scan a QR code and play in the browser, on any phone, tablet or computer. Only the teacher has an account, and a free one is enough for the basic templates.

Other occasions