Article: Your approach (your sprint down the runway) will make a big difference in how far you end up jumping. You want to get up to speed in your first few sprints and then maintain your speed until you jump. Practice this by doing approach runs on a track. Don't actually go through with the jump, just focus on getting up to speed and maintaining your velocity. Designate a take off spot on the track and then stop when you reach it. Go back to where you started after you finish and try again. Practice doing jumps without the approach. Stand in place and bend your knees, placing one foot in front of the other. Bend your body so your upper torso is parallel with the floor. Hold your arms at your sides and extend them straight back so they're also parallel with the floor. When you're ready, lift your body and propel yourself into a jump. Raise both of your arms up and over your head. Land with both feet flat on the floor. Each time you do the drill, mark where you landed. On your next attempt, try to beat your last mark. Find a long jump pit to practice in. Do a short 2-3 step approach down the runway and jump when you reach the takeoff board. Work on getting your legs up and out in front of you. You want your heels to be the first part of your body to make contact with the pit. Repeat the drill until you feel comfortable with your landings.

What is a summary?
Practice your approach with approach drills. Do jumping drills. Work on your landings.