Skill Run: Take group on a 400 m run stopping every 25-50 yards to practice a skill ex: 10 airsquats, push ups, tuck jumps, jumping jacks etc. Make sure for safety that there is a trainer at the front and end of the group.
Hips to Wall: Start with students standing in squat stance ~4 inches from the wall, hands held high. Practice pushing hips back until they contact the wall and then returning to the standing position. Legs should remain relatively straight initially. Feet move progressively farther from the wall and hips sink lower with each rep until the bottom of the squat position is achieved.
Ski 4 Cal
4 Box Jumps
4 Squats on Top of Box