This is a stickyball game that younger kids tend to enjoy a lot. First, separate the class into two teams. Then draw a big grid on the board (4x4 should be fine). Ask each student a question (spell a word, say a sentence, answer a question, or whatever). If they answer correctly, they can choose a square on the board and draw a boat for their team (assign each team a certain color boat to draw). Then do the same for the next team, and keep going until every square on the board has a boat in it.  Then...

It's time for the typhoon.  Each team gets a certain number of chances to throw the stickyball - this is the "typhoon."  If the stickyball hits a boat, that boat is "sunk," and you erase it from the board.  (When the student - Vicky, for example - comes up to throw, yell, 'Oh no! Typhoon Vicky! No school; everyone go home!' and the kids go nuts.) So team A tries to hit all of team B's boats, and vice versa.  You can let everyone throw if you want. When the throwing is done, count the boats; the team with the most wins. It's not the most educational of games, but it's a nice break from the tediousness of class, and elementary kids like it a lot.