This is a high activity game that works on passing, catching, moving to open space, teamwork, and a variety of other skills.  It can be played with any number of students on a variety of playing areas.  The only equipment needed is a ball.

This activity is a skill improvement warm up activity for grades 6-8.  It involves throwing to a moving target and catching on the move.  It requires minimal equipment(cones, a hula hoop, 2 balls for each group) and can be quickly set up and taken down.

Great website with instructional videos of K-8 PE games broken down by grade level and categories.