Physics You Can See

With Magic Pen at Bubblebox.com, the shapes you draw are affected by gravity, friction and inertia. In order to complete the game (the goal of which is to collect flags by moving a given red ball or square over them), you need to draw OTHER objects in such a way that they push the shape or let it drop and roll in the right direction.

It's not just a matter of dropping a big ball that you've drawn onto the smaller given ball and letting it roll towards the flag -- sometimes you need to create a pin or hinge attaching shapes like wedges to help get you to the flag.

I'm a parent, so I'm no good at this game at all. I'm still on the first level, trying to figure out how to get my ball from one "building" to another. Any suggestions, hints or cheats greatly appreciated!