Bead Co-operation

Ella and Ada played together with this toy for some little while the other day. While it may look like Ella is trying to take it from Ada in this picture, what is in fact happening is co-operation: Ella is holding it steady while Ada uses it to pull herself to a standing position.

And now Ella is lifting the beads to the top so Ada can grab them and knock them to the bottom, so that Ella can lift them to the top so Ada can ...