In these days of school budget cuts and doing more with less, the time and money spent on physical education in public schools is dwindling. How can you make sure your homeschoolers get enough beneficial exercise? In fourth grade, most kids still enjoy game-playing, so use that to your advantage. A game of dodge ball or basketball, or even hide and seek with friends counts as healthy activity. If your turn off the TV, computer, and other electronic gadgets, the kids will naturally find things to do, often involving running and playing - it's as easy as that!
But if you're looking for something more formal, sometimes the local YMCA or community center offers "Homeschool Gym" classes so kids can play the sports like soccer or games like kickball that require more than just one family's worth of players. These programs are a great option as well.
Overall, kids and adults should aim for 60 minutes per day of moderate to vigorous physical activity to stay healthy. That sounds like a lot but it's so much easier to accomplish when it's FUN too!