Make sure you have a basket available for the kids to use along with a good pair of scissors. Show them the difference between a tomato that is ready for picking, and one that is not. Carrots and radishes are always fun to pick. Show them how the carrot and radish tops push up out of the ground when they are ready to be picked. They produce so many small pumpkins there will be plenty to go around.
Purple beans are easy to find and fun to pick.
Here are some project ideas to share with your young gardeners. Build a secret garden area in your main garden for kids to hide in. Make a tee pee out of bamboo stakes and plant morning glories or scarlet runner beans. Kids can sit inside the teepee for a quiet hide away. Supply them with ice cream sticks and crayons to make garden markers.