This is a fun and short game to keep your class moving. I like using tape to divide the area and also pictures to clearly mark "tierra" (land) and "mar" (sea). Have the class line up on one side and have them jump to where you say. If the child goes to the place you didn't name, then he/she is out of the game. If the game gets long, I use a dice to end the game (with simple numbers instead of dots). Simply role the dice and have the children jump the number of times shown on the dice. If they land on "mar," they are all out, and if they land on "tierra," we keep rolling the dice until they land on "mar" which will mean the game has ended.