Here is an awesome summer art project for younger children.
Pinwheels are happy things. They are bright and whirl gaily in a breeze or when you blow on them. Another nice thing is that they are really easy to make. Even children who haven't started school yet can make them with a little help.
What you need: Stiff poster paper is best to use because it doesn't tear easily, but you can also use heavy construction paper. Decorate your pinwheel with a crayon, poster paint, or felt pen designs. You will need scissors, a straight pin, scotch tape, a small cardboard circle about a half inch wide, and a stick for a handle.
How to do it: Draw a square 6" by 6", cut this square from a piece of stiff paper. Make sure to mark the letters B on the upper left corner, A on the upper right corner, C on the lower left corner, and D on the lower right corner. Mark a dot in the middle of the square. Also, draw the lines that go almost to the middle, then cut along these lines with your scissors. Now bend (DON'T FOLD) the points marked A,B,C, and D to the middle dot and tape them together. Push a straight pin through the center of the small cardboard 1" - 2" circle, then through the taped points, and into a stick (an eraser of an unsharpened pencil, or a straw). Then blow and watch it spin!