Classroom Warm-Up Generator

Generates a random academic lesson-starter task — a quick, low-prep way to open a lesson and get students thinking — distinct from the purely physical brain-break generator.

Seed (optional)

The same word, at the same settings, gives the same result. It goes into the address when you generate, so a copied link opens with the word in the box. A seed is for repeatability, not secrecy.

Don't repeat what I've already seen

Your result will appear here.

What this generator does

Draws a starter activity for the beginning of a lesson. The first five minutes decide the rest, and the reason they often go badly is that the starter was chosen while the class was coming in — which is the one moment there is no attention available to choose anything.

What you'll get

This generator draws from a hand-checked list of 30 entries. Here is a spread of 6 of them, so you can see the style before you generate:

Write down one thing you remember from last lesson.
Write today's date and one goal for the lesson.
Write a question you think a test on this subject would ask.
Write one true statement and one false statement about last lesson.
Write down what you would need to know to answer today's lesson title.
Predict one mistake people commonly make with today's topic.

A fixed sample of the list, not a live draw — your own results are picked at random from all 30, without repeating until the list runs out. Original HEKNO-curated academic lesson-starter tasks. Last reviewed 2026-08-17.

How to use this tool

Press generate for a warm-up.
Use it to open your lesson, or generate again for another one.

Common use cases

Opening a lesson
Substitute-teacher lesson starters
Settling a class quickly

How this generator works

Draws one of thirty fixed tasks — writing down one thing remembered from last lesson, summarising it in exactly ten words, a quick sketch of anything that comes to mind about today's topic — with a seed word available to set the same starter in advance, which holds for as long as the generator is unchanged. Typing a seed switches the draw to a deterministic, not cryptographic, sequence.

Randomness and fairness

Uniform across the list with the browser's cryptographic random number generator, with no subject or age filtering.

For how randomness is produced across the whole site, see how Generate Random works.

Limitations and good to know

Thirty tasks is about half a term of daily use before one comes round again, and there is no record of which ones a class has already done.
Every task is generic and subject-neutral, so none references today's actual topic — you supply that context when you set it.

Practical tips

Choose it the day before and write it on the board before the class arrives.
A warm-up should need no explanation. If it takes two minutes to describe, it is not a warm-up.