When the ball goes out of bounds on the long sides of the field is when you have to do a throw in. This takes some practice for kids to learn the rules.
Step 1: Hand Position
Place one hand on each side of the ball.
Pull the ball back directly over your head so it touches your neck.
Step 2: Throwing Motion
Step forward towards your target with one foot.
Release the ball over your head. Both hands have to move at the same time. The hands are not allowed to twist.
Both feet have to stay on the ground when making the throw. Drag the back toe on the ground.