A slinky is a handy aid to explore dynamics when teaching or reviewing a song. I direct the children to start singing and to watch the slinky. As I slowly pull it apart, they should gradually sing louder. Then as I slowly push it back together they should sing softer. The kids like to have a turn to use it and this gives us the chance to sing the song several times. I think the small party-favor size works the best. The kids like to stretch the slinky out wide and a bigger one just sags in the middle. This makes it more difficult to gather back in. These small plastic ones work really well. They are cheap and easily replaced. They also don't tangle as readily. This is a real plus!
I got this new one in a different color on my singing time shopping trip. That was a pretty profitable trip. Four new things for my singing aids box.