For homework, list as many opposites you can think of. The class will separate into two teams and stand along opposite sides of the room. Talk about why this is opposite. Students make up a name for their team. If not, it's an out.
Players advance one base for each correct response and earn an out for each incorrect one.
When 3 outs are earned, the other team is up to bat, and so on. Teacher keeps score. Observation of children while participating in the two above activities over the two day period.