Thanks guys, will try Fredo6's Animator.

Thanks Dave. What I was actually hoping for is to use the scale tool to animate the size of a single circle instead of adding a couple of different size circles. Apparently you can do this with the "Keyframe Animation" plugin (saw it on youtube) but it is not a free tool.

Hi all,
I was wondering if it would be possible to animate change of size (scale) using scenes in Sketchup. For example, I have a circle of radius 1m in Scene 1 and I increased the radius to 2m in Scene two. When I try to animate this, it is not working. The circle size is not changing. I would be grateful if one can tell me how I can animate the growth of the size of a circle.
Many thanks.