This is an interactive,dynamic app.Place the numbers in the correct circles by dragging the points. Some numbers belong in the area where the circles overlap. Some numbers do not belong in either circle. When you get all of the correct points inside a circle, the circle will turn green. When you get ALL of the points in the right spot, both circles will turn green. At the bottom you can see the right answer in set notation. Finally, the button in the upper-right will reset the worksheet.