Hello, and welcome. You don't need a full field or a coach's whistle to build a young baseball player.
Most of the useful work happens in twenty-minute bursts at home, with a parent doing the tossing and a kid doing the swinging, and the gains show up fast when you keep it consistent.
Before you hand a child a bat, spend a few sessions on hand-eye work. A simple drill: kneel about six feet away and underhand a foam or tennis ball toward the child's chest. The goal is catching with two hands, thumbs together on balls above the waist and pinkies together below. Do 20 reps, then stop. Kids lose focus past that, and a tired kid learns bad habits.
You'll see lots of parents firing balls at full speed and wondering why nothing sticks. Instead, break the swing down. Set a tee at waist height and have your child take 10 slow swings, checking that the back elbow stays up and the hips turn first. Then move to front toss from about 15 feet, underhand, at maybe half speed. Tee work first, live toss second. That order matters more than most people realize.
Roll grounders from ten feet away and have your child field with a wide base, glove low, and the throwing hand ready near the glove. Count good reps out loud. Ten clean grounders beats fifty sloppy ones. For fly balls, toss underhand high and have them call "mine" before moving, which builds the habit of communicating on the field. A bucket of 15 to 20 balls is plenty for one session.
Throwing is where kids get hurt, so watch the volume. A common guideline is roughly one rest day for every day of pitching, and youth leagues often cap pitchers by pitch count rather than innings. For casual catch at home, keep long toss to 10 to 15 throws and always warm up with short toss first. If your child says the shoulder or elbow hurts, stop for the day. That's not being soft, that's being smart.
Kids quit when practice feels like homework. Turn fielding into a contest: five grounders, count the clean ones, try to beat last week's number. Or set up two cones as a target and see who knocks them down with a throw. A little competition keeps a nine-year-old engaged for the full 20 minutes, and you'll both enjoy it more.
Don't rush the move from tee to coach pitch to kid pitch. A child who can consistently make contact off front toss is ready for slow overhand throws from about 20 feet. Keep the speed low and the strikes frequent early on. Accuracy first, velocity later. Most youth coaches will tell you the same thing.
The whole approach comes down to short sessions, correct order, and stopping before anyone gets tired or sore. Twenty focused minutes three times a week will do more for a young player than a two-hour weekend marathon. Grab a bucket of balls and a tee this weekend and see how it goes.