Using Popplet

I am excited to have found a new, easy-to-use education tool: Popplet.com. Using popplet, teachers are able to create concept maps. The directions for Popplet, in my opinion, were very easy to understand. I caught on rather quickly! The only thing I'm not sure about is how to draw lines to connect the ideas. You can change colors, so that makes it easy to see what is related, but I would also like to draw "connecting lines". While experimenting, I created the following concept map: