Zap

Divide the class into two groups.

Ask the first team a question, if they get it right, they get 1 point and go pull a card.  They have to follow the directions on the card.  The cards vary from being blank (which means everything stays the same, but they still get 1 point) to having to ZAP the other team

(which means the other team loses ALL of their points).  If they do not get the question right, the same question gets asked to the other team and they have an opportunity to get an extra point.

I leave the rest of the cards blank (which means nothing happens)