Begin a regular full squat by lowering your hips towards the ground. Once at the bottom position of the squat explode up wards allowing your feet to leave the ground in a jump.
Break your fall by bending your knees and hips as soon as you land allowing your body to travel back down into another squat. Explode up and and jump again. Keep repeating and you’re doing jump squats!
Tip: You want a quite landing with no thumping. Bend your knees as you land.