Rather than only giving feedback when students are incorrect, say on quizzes, find opportunities to reward correct answers at the time they are given. Let students finish their sentences. In our enthusiasm we must not forget to be good listeners and let others have the floor. Use real world examples. Break your group up into even teams of 3-6 each.
All teams get one radio each and are place out of site of one another.
Team A gets a Lego set with the instructions, Team B, C also get a smiliar Lego set but without instructions. At the same time tell Team C they have plently of time. Limit the amount of information you present at one time. Present only three new items at a time and make sure your participants understand them before you give them something else. They can only handle about seven items, and the three new items and the four relationships between those items will usually be as much as they can deal with at any given time.