"Simon Says" is a quick and easy game that requires no props. In its simplest form, stand in front of your class and instruct students to touch different body parts by saying "Simon Says touch your knee," "Simon says touch your nose," etc. To keep things interesting, allow the children to take turns being Simon. Include motions in your instructions, such as, "Simon Says wiggle your nose." If you are in a contained area, add the environment to the game by saying, "Simon Says touch something green."
Gather your class and have students sit in a circle. There are several quick games that can be played while sitting in a circle. Play a game of "Duck, Duck Goose," encouraging your students to walk quickly rather than run if you are indoors. If you have a beanbag or ball, play hot potato by having the children pass it around the circle while you sing a song. Whoever is holding the beanbag when you stop singing moves to the center of the circle.
Songs like "If You're Happy and You Know It" and "The Hokey Pokey" provide great short games, as they ask the children to participate with physical movement. Add variations to "If You're Happy and You Know It" by putting different emotions into the format, like "If you're mad and you know it," "If you're tired and you know it," etc. Ask your class to participate by putting how they are currently feeling into the song.
Have your class line up and designate the first child in line as the "leader." The rest of the class must remain in a straight line, following the leader wherever he goes and moving in whatever way he chooses. Allow each child a chance to be the leader. Encourage creativity by suggesting the children scuttle like crabs, stomp like elephants or fly like birds. This activity is best done in an open space where your class will have room to move about.