Ten minutes at the start of the day, nothing to prepare. Put it on the board and press the button.
No right answer, but you have to defend yours.
Guess the flag shows a flag; reveal the country, then the capital. A thunk is a question with no right answer that pupils have to defend a position on. The riddle has a hidden answer. Countdown gives you nine letters or six numbers and a target, with the best words or a solution when you want it. Everything is picked at random each time, so it is different every morning.