In lengthy programs you may want to use all of these different methods to some degree. 3 Questions may be multiple choice, yes or no, true or false. They may have specific correct answers or be a general survey. Different types of questions may be asked during the same presentation. Questions should be concise.
Screen space is limited.
Good-looking visuals contain as few words as possible. The buttons on the wireless audience response keypad are numbered from 1 through 10. The 1 and 2 button also say yes and no respectively. 5 Tell the audience to enter their responses. There may be a countdown timer on the screen or an audio countdown to signify the polling period.