Traffic light — quick understanding check

Participants pick a green, amber or red light on their own device and the host sees the overall picture in real time. You find out whether to move on or go over it again, without anyone having to raise a hand and admit in front of the room that they are lost.

How a session works

The host starts a new session and gets a unique code. Participants open the join page, enter the code and see three buttons: green means “I follow”, amber “not quite sure”, red “I need help”. An answer can be changed at any time, so the picture reflects the current moment rather than the start of the lesson.

Why the feedback is more honest

Raising a hand is public and therefore biased — most people will not admit confusion in front of a group. The traffic light delivers the same information privately: individual answers are not visible to others, only the aggregate is shown to the host. As a result the share of red and amber is usually more honest than a show of hands.

When to use it

It fits in the middle of a longer explanation, during independent work (whoever needs help marks red without waiting) and at the end as a summary check. On the participant side there is no account and nothing to install — a link and a code are enough.

Frequently asked questions

How do I quickly check whether a group understood a topic?

Start a session, share the code and ask everyone to pick a green, amber or red light. The aggregate appears on your screen in real time.

Do participants need an account?

No. A participant opens the join page, enters the code and can answer straight away — no account, no install.

Can others see what someone answered?

Participants only see their own choice. The aggregate goes to the host, which is what makes the feedback more honest than a show of hands.

Can an answer be changed later?

Yes. A participant can switch their light at any time, so the picture always shows the current state.