Tech Republic: “The spin animation in Microsoft PowerPoint makes shapes appear to turn, and it works great unless you’re working with a circle. You can’t see a circle spin—it spins, you just can’t see it because there’s nothing to anchor your eyes on. Adding other shapes to the circle is an easy way to expose the spin animation. In this article, we’ll add some stars to a circle so you can see the circle spin. Then, we’ll add a second layer of stars, just for fun…”